| Audio pickup from phone line |
Picks-up audio signal when near a phone that is in use. |
2.81 |
2,686 |
| Caller ID and ring generator |
Uses AT90S1200 and generates FSK tones Bell 202 standard for communication and caller id. |
2.78 |
2,044 |
| Caller ID with 7-seg display |
DTMF Caller ID, not FSK but DTMF. |
2.86 |
2,306 |
| Half-a-phone |
A phone that can only accept calls. |
2.87 |
1,706 |
| LED monitor for phone line |
Turns LED ON when phone line is in use. |
2.88 |
1,290 |
| LED-blink monitor for phone line |
Blinks LED while phone line is in use. |
2.87 |
1,123 |
| Nice telephone ring melody |
Nice telephone ring melody device. |
2.79 |
2,166 |
| Phone line in use indicator |
Very simple device with two LEDs as indicators. |
2.88 |
1,030 |
| Phone ring generator v1 |
Generates voltage across phone line in order for phone to ring. Works on 12V. |
2.83 |
1,001 |
| Phone ring generator v2 |
Generates voltage across phone line in order for phone to ring. Works on 9V. |
2.83 |
1,009 |
| Smart telephone light |
Turns on lights when phone rings and if in dark. |
2.87 |
2,094 |
| Telephone answering machine |
Telephone answering machine. |
2.91 |
1,693 |
| Telephone audio amplifier |
Amplifies telephone audio signal. |
2.81 |
1,586 |
| Telephone exchange with 2 numbers |
Small telephone exchange with 2 numbers. |
2.88 |
3,825 |
| Telephone hold with music |
Keeps phone line open and plays audio signal on it. |
2.89 |
1,032 |
