Product description:
The latest anti-metal detection, shielding, electronic dog, cheatk.
Support drive: Sodium rice headphones, 105,205.
The watch comes with various control methods
If there are not only "detector dogs", shields, radio scanners or other similar equipment in the case of applications, there are metal detectors, communications equipment should not be used in the ordinary specifications of anti-shielding anti-detection radio system.
The whole system electrical index design uses 200----650MHZ frequency, a total of 2000 channels, open space wireless transmission distance of 1000-5000 meters, with high anti-jamming capability. Visually drive C205/105 and rice grain headphones.
Performance features
1. With -130dBm of message sensitivity, ensure reliable reception in a variety of different use environments.
2. Bidirectional intercom (speak directly in the examination room with a small voice)
3. With signal-free automatic noise suppression, it eliminates the harsh noise of ordinary devices of the same type and improves the listening environment.
4. The minimum operating voltage is designed with a single battery for a long period of time to ensure that the battery operates with minimal power supply.
5. Moderate volume output for use in a variety of noisy and quiet environments.
6. Reliable high temperature resistance to large humidity changes automatic frequency compensation circuit design.
7. Reliable anti-leak framework to avoid close-up interaction with the device
Technical indicators
Transmitter
Model Item Watch-type receiver transmitter
Frequency range 400-470MHz, 200---250 MHZ, 500---650MHZ total 2000 channels
Modulation FM
Power 3W/25W
Supply voltage 12.0V DC (standard)
Transmitter operating current 3A
Antenna output impedance 50 s
Automatic micro-tone start-up microphone sound pressure 45dB
Weight 550g
Watch-type receiving terminal (including transmitter)
Current consumption approx. 3mA (when radio is silent) 10mA (when there is a signal)
1 battery in the power supply
Continuous Working Hours 10 hours
Operating temperature range -20oC to 60oC
Frequency Stability and plusmn;10ppm
Sensitivity 12dB SINAD 0.18uV
Selective 12KHz (-6dB) 28KHz (-40dB)
False Signal Response -50dB
Noise-cancelling sensitivity 0.25uV
Audio output power 50mW (8o load distortion 0.3%)
Price: 2150 yuan
