NRS 232 - miniature emergency emitter for alerting and remote control

The NRS 232 is a miniature emitter and is used for alerting or remote control purposes in combination with radio-receivers working on POCSAG-protocol (e.g. LX2, LX4, remote control device PFS141).
Field of operation: silent alert, e.g. in hospital or prison. The device is driven by a Lithium-battery. Charge status is indicated by a LED on the device or via radio transmission the the dispatch center. Highly reliable due to repeated transmission.
Main technical specifications
| Frequency: | UHF (one channcel in range 442...472 MHz, fixed) |
| Selective call: | DFSK POCSAG (Baudrate 512, 1200 or 2400 Baud, programmable at production) |
| Addresscode: | RIC-enumeration |
| Sending power: | +5 dBm |
| Radio standards: | EN 300 220 conformity |
| Antenna: | integrated frame antenna |
| Range: | ca. 300 m |
| Controls: | Trigger-button and red alert-LED |
| Power supply: | 6 V-Lithium-battery |
| Battery duration: | ca. 5000 single transmission per battery, lowest self-discharge |
| Alert repetition: | Repated transmission, programmable at production, interval dependant on RIC |
| Battery checking: | 4-steps, transmitted by radio |
| Protection category: | IP41 |
| Weight: | ca. 26 g incl. wristband |
| Measurements: | 52 mm x 32 mm x 15 mm |
| Options: | Implementation with wristband or medaillon |
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Contact data:
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Friedrich-Bähre-Straße 18
31832 Springe
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Oelmann Elektronik is specialised on a variety of solutions in the field of control center technology and wireless communication in digital and analog environment:
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Digital and analog pagers for authorities and organisations with security tasks (BOS) in 4m- and 2m-frequency band as well as accessories like chargers, program adapters and other service equipment.
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Sending- and receiving devices for emergency calls and remote controls.
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Alarm-devices (including software-support) for BOS-Alertsystems.
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Hands-free kits for radio devices.
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Digital control technology to transmit commands and messages between control centers and stationary radio stations
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Control- and monitoring-cards for different radio networks and their applications
- Analog and digital selective calling transmitter acting as remote-radio-monitor for control centers
Services
Our company is specialised on a variety of services:
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Development of assemblies in high-frequency and digital environment
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Software-development of embedded-systems and applications
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Configration of custom and serial devices (including sample and small series) by trained personnel, including installation, wiring, putting into service, operation tests as well as creating technical documentation and purchase of supplies.
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Conventional and SMT-assembly by specialised partner companies in our region as well as inhouse-testing of circuit boards.
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Circuit board layout extraction for electronical assemblies, especially for high-frequency devices considering EMC-aspects.
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Close cooperation with selected partners in the field of constructing of mechanical parts, circuit boards, plastic injection and toolmaking.
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We provide measurement skills in every development stage as well as acceptance- and immunity tests on customer devices including measurements to fullfill the requirements to get a CE-mark.
- Our company has been certified to DIN EN ISO 9001:2008 by the DQS.
Oelmann Elektronik moved into new premises !
- Published Date

Oelmann Elektronik supplying "TETRA Ireland" with TETRA-pagers
- Published Date

After comprehensive tests the TETRA-consortium "TETRA Ireland" has decided to procure Oelmann TETRA pager VIPER TME.
The headquarters of Oelmann Elektronik GmbH is located in Springe near by Hannover, Germany.
You can reach us very comfortably by railway. The railway station is only 200m away from our headquarters. With suburban train line S5 you reach Hannover in 30 minutes and the airport Hannover in 45 minutes.
Mobile pager test device PS 622
The PS622 testing device is a handheld device and is intended to use for testing mobile pagers. It supports POGSAG and 5-tone signalling.
All parameters can be set directly on the keypad. Furthermore, the PS622 can be controlled comfortably using the integrated USB-interface on a windows computer. The device features and configuration can be displayed and programmed using a user-friendly software-interface.
Customized text elements to be used for POCSAG-pagers or status signals from the FMS-radio system can be easily stored directly in the device.
The modulation connector offers control signals for special metering and testing setups.
The PS622 is the ideal tool for maintenancing and testing pager devices following e.g. reprogramming or repair.
Detaillled product information can be obtained in our download-section !
| Publisher: |
Oelmann Elektronik GmbH Amtgsgericht Hannover, HRB 101361 Turnover Tax-ID (§27a German UStG): DE 116401360 WEEE-Reg.-Nr.: DE 60387094
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| Responsible for the content of this website: |
Dipl.-Ing. Evert ter Veen (CEO) |
| Design and technical implementation: |
KP-netdesign Benjamin Busch Lesumbroker Landstr. 14 28719 Bremen Phone: +49 421 / 56344041 Mail: This email address is being protected from spambots. You need JavaScript enabled to view it. |
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Welcome to our website. We thank you for your interest in our company, products and web sites. We recognize the importance of protecting the privacy of your personally identifiable information. Anonymous data collection:
You can visit the web sites of Oelmann Elektronik GmbH without telling us who you are. Collection and processing of personal data:
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At the moment we do not offer weblinks to external ressources on our web site. In case you have additional questions concerning "privacy policy at Oelmann Elektronik GmbH", please feel free to contact our data-protection supervisor. |
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POCSAG - Receiver PFS 141
Main features
- 128 different alarm addresses (32 RIC containing 4 sub-adresses), customizable programming (tone-only, numeric, alpha-numeric)
- Optical display of alert group (individual assigned 32 character keyword)
- Displys actual time / alert time and date
- Up to 8 different user profiles (usable address groups)
- Integrated quarz-clock
- Acousic alert using 16 customizable alert signals
- Every received message can be journalized/displayed via connected devices, e.g. PC, serial printer, led-display)
- Up to 8 switching contacts can be programmed and controlled
- Connection of external antenna using 50Ohm-coax-connector
Accessories
- rod antenna, linear
Product options
- 141.0100: Stationary POCSAG-receiver incl. progr. software and connector to serial interface.
- Option 141.9100: Mounting rail, 2m, NS35/7,5 perforated
- Option 141.9200: A/C-adaptor, DIN-track mounting, 230V~/12V=, 1A
- Option 141.9300: Connecting relay module 1xUm/16A, voltage 12V
- Option 141.9400: Connecting relay module 2xUm/5A, voltage 12V
- Option 141.9500: Connection bridge for max. 8 modules, 10A
- Option 141.9600: Printer Epson LX300
- Option 141.9700: Connecting cable serial printer interface
- Option 141.9800: Connecting cable parallel printer interface
- Option 141.9900: A/C-Adaptor 12V/500mA
Oelmann Elektronik supplies emergency service in Great Britain with TETRA pagers
- Published Date

Passing comprehensive tests, the "North West Ambulance Service" (NWAS) emergency medical service in Great Britan made a decision to utilize Oelmann's TETRA pager VIPER TME in the future.
Experience pays off !
For more than 30 years, Oelmann Elektronik GmbH is working in development, production and service in the field of electronic assemblies and communication technology devices.
A staff of 30 employees are working hard at its headquarters in Springe to be your compentent partner for development on high frequency radio, low frequency radio, software products as well as purchase and production of samples, individual oder serial products.
Proximity to our customers, high reliability and a qualified service are our priorities. It is important for us that you can directly contact our qualified work staff. We are certified according to quality-management-directive DIN EN ISO 9001:2008.
More information on our international activities and communication systems at http://oelmann-elektronik.com
Radio alert relay FAU 597
Main features
- 5-sound sequence / FMS-alert relay following TR-BOS devices for radio alert, annex B
- Power supply via radio unit
- 19"-front blade 290x116x128mm or
- im desk housing 212x116x180mm
- Programmable via V24-interface using comfortable software
Models
- 597.01: Radio alert relay 5-sound sequence/FMS, desk housing
- 597.40: Radio alert relay 5-sound sequence/FMS, 19"-rack systems
- Option 597.10: Digital voice recorder
- Option 597.20: PC-programming software Windows
- Option 597.41: Connector cable radio alert relay Teledux 9
Oelmann Elektronik supplies another emergency service in Great Britain with TETRA pagers
- Published Date

The "first respond" unit of the "North East Ambulance Service" (NEAS) in Great Britain has also decided to utilize Oelmann's TETRA Pager VIPER TME.
Read more: Oelmann Elektronik supplies another emergency service in Great Britain with TETRA pagers
Digital siren control receiver DSE342
The digital siren control receiver picks up digital POCSAG-transmissions to control sirens.
The siren is switched via a power relay. Sirens are triggered following the 4 TR-BOS standard protocols.
Main features
- 2m-band receiver (167-174 MHz)
- Power supply via main voltage
- Optional backup power supply
- POCSAG-system following TR-BOS standards
- Power relay to control siren functions
- Additional power relay
- 6 additional switching relays
Additional information can be obtained via our downloads - section !
Oelmann Elektronik announces TETRA pager ATEx type
- Published Date

Besides the standard TETRA pager VIPER TME, the new explosion protected model (ATEx) "VIPER TME Ex" is now available.
Read more: Oelmann Elektronik announces TETRA pager ATEx typeDSP interpreter and emitter 108.06.XX
Main features
• interpreter module based on signal processing unit
• Connectable to DGA 108, low-frequency signal-connection via solder connector
2 solder connectors for low-frequency use
Operational area: wired DGA 108 - modules. Improved interpreation of FMS-broadcasts. DSP interpretates the radio transmission and the emitter forwards the cleared signal to the DGA 108 unit.
Oelmann Elektronik wins the tender for TETRA pagers in Norway
- Published Date

In an impressive and transparent decision-making procedure including extensive fieldtests, the "Directorate for Emergency Communication" (DNK) in Norway has decided to utilize Oelmann's TETRA Pager VIPER TME.
Criteria like quality of the product (incl. documentation), callout-implementation, sensivity (incl. inhouse), battery lifetime, usabilty as well as our concept of service has led to a clear win among the other competetitors.
A procurement of up to 8.000 TETRA pagers is planned by the DNK.
Being clearly ahead from the products of the competitors, the DNK decision confirms the high quality standards and the outstanding capabilties we put into Oelmann VIPER TME.
Digital interpreter for use by journal printer DGA539
Main features
- 3..10-sound sequence interpreter ZVEI,CCIR,EEA
- Digital call-interpreter ZVEI,FMS,VDEW
- 6..15V-power supply (max. 15mA)
- direct connection on printers centronics-interface
- Windows-user interface for administration and operation
- Optional connector cable for use with radio unit FuG8
Digital call- and signal tone transmitter and interpreter DGA538
Main features
- 3..10-sound sequence emitter/interpreter ZVEI I u. II, CCIR, EEA
- Digital emitter/interpreter ZVEI, FMS, VDEW
- Dongle-small housing with 25-pol.D-Sub-connector for PC and 25-pol.D-Sub-connector for radio unit
- incl. connector 25pol./9pol.
- 6..15V-power supply
- 1 optocoupler-switching output for sender or else
- Controllable by PC/Laptop via specific data sets
- Standard DOS-User interface (Windows optional)
Accessories
- Connector box for DGA 538
Technical options
- 538.0100: Emitter/interprete with server-software
- 538.0200: Windows client-software
- 538.10: Emitter/interpreter with customized software
SIRIUS-Repeater PRS 341 - digital alert repeater unit
Main features
- Programmable 2m-band channels
- Adjustable transmission power ranging from 0,8W up to 25W
- Optional: integrated backup power supply
- Parameters are set via terminal intereface
- Interface RS232
- Optional: integrated antenna switch for different sending- and receiving-transmission ways
SIRIUS-Gateway - Combining TETRA and POCSAG
Main features
- Integrated 2m-transmission unit for using in POCSAG network
- Integrated TETRA-transceiver
- Independant control for TETRA / POCSAG
- High-capacity power supply with backup power supply
- POCSAG-protocol fully compatible to SIRIUS Digital Alert Relay (DAU)
- Modern signal processing
- SIRIUS components providing low-cos service
Model options
- 340.3000: TETRA/POCSAG-bridge in RITTAL-wall housing incl. backup power supply, 2m- and TETRA transmission unit
- 340.3100: TETRA PC-unit in table housing for direct connection to PC via serial intereface, incl. 230V-power supply and audio interfaces
Digital Alert Emitter SIRIUS DAG
Main features
- Modern client-server architecture
- Data transmission using standard-network-protocol TCP/IP
- Redundant server-architecture
- Monitoring of network infrastructure
- 128-bit end-to-end encryption
- Encryption can also be activated later without any hardware modifications
- Tactical group calls
- Alerting in different zones
- Multi-Master-Mode
Additional information can be obtained at www.atsonline.de
Digital Alert Relay SIRIUS DAU
Main features
- Programmable 2m-band frequencies
- Redundancy using two seperated transmission-units
- Adjustable transmission power ranging from 2 to 25 Watt
- Integrated backup power supply
- Parameters can be set via IP or over-the-air interface
- Interfaces: IP (Ethernet), ISDN and V.24
- Optimized for use in dispatch centers
- Bug proof using 128-bit encryption
Accesories
- GM340/360/380/CM3x0 programming cable
Product versions
- 340.0100: Digital Alert Relay (DAU) TR-BOS as 19"-rack (6HE) incl. backup power supply and redundant 2m-transmission unit
- 340.0200: Digital Alert Relay (DAU) TR-BOS in RITTAL-wall housing incl. backup power supply and redundant 2m-transmission unit
- 340.0300: Digital Alert Relay (Master-DAU) TR-BOS as 19"-rack (6HE) incl. backup power supply and redundant 2m-transmission unit
- 340.0400: Digital Alert Relay (Master-DAU) TR-BOS in RITTAL-wall housing incl. backup power supply and redundant 2m-transmission unit
- 340.0500: 70cm-feeding unit as 19"-rack (6HE) incl. backup power supply, 70cm-transmission unit
- 340.0600: 70cm-feeding unit as 19"-rack. in RITTAL-wall housing incl. backup power supply, 70cm-transmission unit
- 340.0900: Digital Alert Relay (DAU) TR-BOS as 19"-rack (6HE) incl. backup power supply, 4m-transmission unit, 5-Tonfolge-relay and voice interface
- 340.1000: Digital Alert Relay (DAU) TR-BOS in RITTAL-wall housing incl. backup power supply, 4m-transmission unit, 5-Tonfolge-relay and voice interface
- Option 340.9100: Lightning-conductor
- Option 340.9300: ISDN-interface
- Option 340.9600: 8 fault transmitter sensor inputs, 8 regulation outputs, potential-free

The digital alert system SIRIUS is specially designed for all purposes in alerting for emergency services and other aid and relief organisations as well as industrial customers which are dependant on fast and effective alerting of technical staff.
- The digital alert emitter DAG 4000 is based on a modern client-server architecture and enables dispatcher units to activate and emit alerts
- The digital alert relay DAU is characterized by the consequent integration of modern technical interfaces (IP, ISDN, V.24) enabling dispatch centers to fully integrate the DAU into their systems and providing an flexible interface to the DAG unit.
- Transmission modes like token, odd / even, ring- and crash-alert are standard elements of the Sirius system. Other features like repeater-functions (even to other networks), sequential broadcasting using different baud-rates for compatibilty to other systems are possible.
- Main parameters of the DAU unit are set by over-the-air interface.
- Bug-proof using 128-bit encryption
- The over-the-air interface offers a reliable redundancy using two seperate transmission units (5-25W) incl. monitoring functions and automatic switchover in case of failure.
- Integrated backup power supply garantuees a lossless alerting in case of power breakdown.
- Frequent polling of malfunction sensors provide provide constant information about the system state.
TETRA-Pager VIPER TME

TETRA Pager (TME) constructed to serve Fire Departments, Emergency Medical Services, Police, Federal Agencies for technical relief, Standby-Services, Civil protection and other industrial services around Europe.
Oelmann VIPER TME is designed to work in the TETRA digital radio network and offers a highly reliable and secure way to alert emergency services.
Extremely fast alert transmission and active feedback of available personnel lead to an effective ressource planning enabling units to the fastest first response.
The TETRA standards offer fast and reliable data transmission, feedback options and encryption. Often, other systems can only achieve this with higher costs and an individual solution (not being compatible with other systems).
Loud alerting, high-quality clear voice instructions and MP3-Signal tones can be used for various operational scenarios.
ATEX version is also available:
EC-type-examination: ZELM 12 ATEX 0499 X
Detailled product information can be found in our Downloads !
TETRA Alert systems, benchmark for the future.
Experience - Customer Focus - Innovation – Made in Germany.
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