Automatically dials the pre-programmed telephone number (Factory pre-programmed to auto dial 911) when handset is taken off-hook.
Works on any analog phone landline (pstn, voip) that is fsk or dtmf compatible (Warning Ring bell requires 24v or higher ring signal from phone service provider. Otherwise, it may not ring on incoming calls).
The perfect solution for taking important incoming calls without risking phone abuse of outgoing calls. Ideal for hotels, barber shops, pizza shops, and basically anywhere a phone is needed for incoming calls but not necessarily for outgoing calls.