Seco-Larm - 315MHz Handheld RF Transmitter with 4 Button - 15 Channel - Up to 500 Feet Abus_120 Standard Door Prep Standard door

Standard Door Prep Standard door prep - 2-1/8" (54 mm) diameter (cross bore)

Guide Post for Easy Installation

non-clutch mechanism

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**battery system analysis**

Seco-Larm - 315MHz Handheld RF Transmitter with 4 Button - 15 Channel - Up to 500 Feet Abus_120 Standard Door Prep Standard doorExtreme durability rubber buttons eliminate damage caused by electrostatic discharge and help make transmitters weatherproof (IP65). Gold plated battery clips and contact points extend the life of the transmitter Magic LED only appears when buttons are pressed 315MHz Operating frequency Over 68 billion possible codes CODEBUMP models also available with 18 quintillion possible codes RF anti scan protection Includes two 3VDC lithium batteries Compatible