| Audio pickup from phone line |
Picks-up audio signal when near a phone that is in use. |
2.81 |
2,726 |
| Caller ID and ring generator |
Uses AT90S1200 and generates FSK tones Bell 202 standard for communication and caller id. |
2.78 |
2,081 |
| Caller ID with 7-seg display |
DTMF Caller ID, not FSK but DTMF. |
2.89 |
2,336 |
| Half-a-phone |
A phone that can only accept calls. |
2.87 |
1,728 |
| LED monitor for phone line |
Turns LED ON when phone line is in use. |
2.90 |
1,308 |
| LED-blink monitor for phone line |
Blinks LED while phone line is in use. |
2.87 |
1,138 |
| Nice telephone ring melody |
Nice telephone ring melody device. |
2.80 |
2,179 |
| Phone line in use indicator |
Very simple device with two LEDs as indicators. |
2.89 |
1,043 |
| Phone ring generator v1 |
Generates voltage across phone line in order for phone to ring. Works on 12V. |
2.85 |
1,020 |
| Phone ring generator v2 |
Generates voltage across phone line in order for phone to ring. Works on 9V. |
2.83 |
1,029 |
| Smart telephone light |
Turns on lights when phone rings and if in dark. |
2.87 |
2,116 |
| Telephone answering machine |
Telephone answering machine. |
2.91 |
1,722 |
| Telephone audio amplifier |
Amplifies telephone audio signal. |
2.85 |
1,620 |
| Telephone exchange with 2 numbers |
Small telephone exchange with 2 numbers. |
2.87 |
3,869 |
| Telephone hold with music |
Keeps phone line open and plays audio signal on it. |
2.90 |
1,055 |
