SRA-25

Remote controlled UHF transmitting system.
The transmitter can be switched on/off remotely by a unique digital radio link. When turned on it will transmit conversations to a receiver.
The main advantage of a remote controled transmitter is there is absolutely no possibility to detect it with technical tools after it was turned off remotely.
Another advantage is very low power consumption when it's off.
With our Automatic Gain Control system it is able to pick up a whisper 40 feet away from the transmitter microphone as clearly as loud speech near it.
Exceptional audio quality.
The system also incorporates very advanced features such as remote changing output power and very long standby time.

Features

• Ultra miniature size.
• Remote controlled operation.
• 2 output power levels can be switched remotely.
• The detection is absolutely impossible when it's in standby mode.
• Ultra low power consumption in standby mode provides very long standby time - 165 days.
• Remote battery voltage monitoring with audible signals.
• Audible confirmations of recieving commands.
• CR2450 Lithium battery.
• Shock resistant indestructible design.
• Extremely sensitive built-in microphone.
• Automatic microphone gain control.
• Crystal frequency control.
• Remote control unit is included.

Technical data

Transmitter

Size: 25x25x13.5mm (1"x1"x0.53") including battery
Range in "low power" mode:
     150 meters in open field, 70 meters in a city
        (500 feet in open field, 230 feet in a city)
Range in "high power" mode:
     500 meters in open field, 200 meters in a city
       (1700 feet in open field, 700 feet in a city)
Power requirement: 3 V (2.2 - 3 V)
Battery type: CR2450
Battery lifetime: 50 h in high power transmit mode
                       90 h in low power transmit mode
                       4000 h in standby mode
Output power:
     high power mode: 5mW
     low power mode: 1mW
Frequency: 433 - 434 MHz (300 - 600 MHz on demand)
Modulation type: NFM
Operating temperature: 0 to +45 °C (32 to 113 °F)


Remote control unit

Size: 110x65x27mm without antenna
Number of commands: 2
Maximum number of devices on one channel: 256
Output power: 100mW
Modulation type: pulse-width
Power requirement: 9V battery
Operating temperature: 0 to +60 °C (32 to 140 °F)