yeah its a little black box, I think the model number is CM-1 ? Your cell give off a bit of a signal before it rings, that sensor allows it to get picked up.if you ever leae your cell near a monitor or speakers youll see what im talking about, it will cause static before it rings.
Member # 751FOUNDER of the Central Cali chapter of 2GNT!(I got kicked out after I refused to go Cow tiping) - Hehehe you know who this is for