Telephone KitsOur telephone kits provide a cost-effective way to learn about telephone technology. We've got a DTMF grabber (which can detect a number dialled from the tones the telephone makes), outgoing telephone number logger and other interesting kits.
The kit will detect DTMF tones from a telephone line or via an onboard microphone and display them on a 16 character, single line display.
Learn how a telephone works. Comes complete with all parts and manual. Has the latest features such as automatic redial, mute and flashing neon lights when ringing. The clear plast...
Recorder all outgoing dialed numbers on your phone with this electronic kit.
No electrical connection to the telephone is required, attach a suction cup to the hand set an turn on the amplifier. This project permits group listening to phone calls. You can a...