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Call waiting
pressing one of the transmitter’s front buttons sends channel one through four
JMX portable radio and JBS desk-top base radio
Pin assignments are shown below - from left to right: 1 - Relay (NC) (opens for detect) Pulse2 - Relay Common Pulse3 - Relay (NO) (closes for detect) Pulse4 - Power Common 5 - Power in (10 to 30 Volts AC or +DC) 6 - Loop 7 - Loop
DoorKing 16120 Key And Lock Doorking In-Ground Opener Call waitingDoorKing 4001 035 Key With Lock Comes as a set of lock and keys Key alone not available anymore Key was known as 2600 657 and 16120
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