UHF smallest in-ear receiver – new type of spy ear piece !
Ultra-secret one way UHF FM spy ear piece / in-ear receiver, this is total invisible in the ear, used for covert communications and surveillance.
- Smallest spy micro earpiece in-ear Receiver ever made, that enters completely in the ear canal, without anyone to see it.
- The working distance is 200 meters in open field.
- The spy micro ear piece, MRF400-B in-ear receiver, has a black coat, for a better invisibility in the ear canal – the perfect camouflage, imitating the darkness in the ear.
- No neck-loop needed! No accessory on your body!
- Undetectable for any detector!
- Non jamming by any phone jammers!
- No interference with any electromagnetic fields!
- No billing for your conversations
- Instant communication, without waiting calls or conditioned by the phone network
- Secret communication! your conversation will not be taped by phone operators and no leads to your location
What is it for:
This covert communication system can be used in various situations, like public speeches, TV presenter speaking, surveillance, presentations or to cheat on the hardest exams.
How it works:
If you need to have a covert communication, all you have to do, is to put the spy earpiece into your ear canal, in order to hear your partner. Your partner can be at a distance of up
to 200 meters in open field or less (in a building area). Like the MRF400-C spy ear piece receiver, it doesn’t need any wires or accessories on the body, making it a champ of all earpieces on
Technical specification for MRF400-B spy Micro Earpiece UHF FM Receiver:
- Dimensions: 10 x 6 x 6 mm
- Receiver mod: narrow-band RF receiver
- Frequency: fixed UHF FM, crystal quartz controlled
- Audio response: 200 Hz – ~4500 Hz
- Audio signal output: 94 dB
- Noise filter: soft squelch
- Sensitivity: SINAD 17 dB @ E=2mV/m
- Channel selectivity: 49 dB (at 200 kHz channel spacing)
- Antenna: magnetic, integrated
- Spurious emissions: below – 51 dBm ERP
- Distortion: 5% (depends on the volume )
- Weight: 1.5 g (with battery)
- Battery autonomy: operational time up to 5 hours
- Current consumption: 1.8 mA
- Type of battery: alkaline AG4
- Working distance: 200 m, in open space
- The MRF400-B spy micro earpiece UHF FM receiver is being delivered with 1 battery.