Mfg. Teltone M-949
Size: 1-1/8" X 3/8" X 3/8"
Coil Resistance: 20 ohms
Contact Current: 500mA
When connected to the voice telephone lines it closes when the phone
is picked up. This can be used to control monitoring (recording) of
Senses telephone line current from 18-126mA.
Achieves 63dB min longitudinal balance.
1500 VDC coil to contact isolation