Simple design wireless call system with call function. - Model Name: i-Call LCW100 - Type: Wireless call - Number of buttons: 1 - Function: Call function Thank you for viewing. I've had it installed for about six months. I've only used it a few times, so it's in good condition. The button side uses a button battery, but it's dead, so please purchase a new one. The main unit also requires 3 AA batteries as it has no battery.