Description
DoorKing 1610 091 Heavy Duty Flush Mount Traffic Spikes wireless vehicle sensor the T 21 includes a built in safety Select Model:100 Devices V.4 MX4365 The MAX RHINO 4000 the T 21 includes a built in battery backup providing 400 continuous cycles to keep your gate operational during power outages Compatibility: LiftMaster Industrial Duty Slide and Trolley Operators