P/N IM-WRA-3 Rev. A
2012 Commercial Wireless Systems International, LLC.
5
Section 1 - Description and Features
1.1 Product Description
The CWSI WRA-3 is an intelligent addressable wireless fire alarm annunciator. It has a 4 x 20
character backlit lcd which will display alarm, supervisory and trouble signals from the control panels,
devices and annunciator listed in the compatibility section of this manual. Additionally there are 5 front
panel leds for visual indication of A/C power, Alarm, Supervisory, Trouble and Silence. The WRA-3
provides acknowledge, signal silence and system reset control functions via a membrane keypad.
Operation of these keypad functions is protected by a key lock.
1.2 Features
Bi-Directional RF communication
900 MHz Frequency Hopping Spread Spectrum format
CRC data validation
Rechargeable Lithium battery supplies 24 hour backup time
Built in alert sounder
Powered by Class 2 transformer
4 line 20 character backlit LCD display
Power, Alarm, Supervisory, Trouble and Silence LED’s
Acknowledge, Previous, Signal Silence and Reset control buttons
User keypad access key lock
Hinged locked enclosure
Easy site programming with SD card
1.3 Specifications
Power Source: 120 VAC 60Hz 2 Amp dedicated circuit
Battery: 3.7Vdc 3Ah lithium ion battery CWSI P/N BA-3.7V-3AH
Operating Temperature: 32 to 145 degrees F
Operating Humidity: 85% non-condensing
Transceiver Operating Frequency: 900 MHz band
Signal to Noise Ratio: Minimum Signal -100.2dBM Maximum Noise -115.3dBM
Antenna Type: Omni
Transmission Format: Frequency Hopping – Spread Spectrum.
Dimensions: 7” high, 8” wide, 2 ¼” deep
Enclosure: Powder coated steel
Weight: 1 Lbs.
WRA-3 Ratings @ 3.7 Vdc: Standby 60ma. Alarm 120ma.
