A sophisticated miniature phone transmitter hidden in a phone jack.
The device can be connected in a simple and swift way - parallel connection - to any phone jack or extension.
Covers All the phone jacks / extensions of the phone line.
The phone jack transmitter was designed for pros and novice alike - No technical skills needed for installation, No need to disconnect or connect any wiring, simply plug it to one of the phone jacks / extensions (with a phone cord) and you're set.
Loud and crystal clear sound of both parties on the line.
Your phone calls are protected from accidental reception of regular radio and TV sets in your neighborhood.

The transmitter is manufactured using new and high reliability hybrid circuits technology.
Frequency operation is around 433 MHz crystal controlled FM narrow band.
No antenna required. No battery required (Powered by line current).
Extremely difficult to detect - nil current consumption during on hook operation .
Audio bandwidth: 20 Hz to 30 kHz .

Protected from high voltage during ring operation.
Range up to 700 feet in open area.
Automatically transmits the conversation between both parties on the line to a receiver immediately a conversation begins.
Mutes when phone call ends.
You can use All extensions / phone jacks (not only the one that the transmitter is connected to), for full operation.