The F310 weatherproof digital keypad can be easily installed as a wired or wireless keypad for all GTO swing and slide gate operators (GP series wired only), and as a wired keypad for the Bulldog Pedestrian Gate Lock. It can be programmed to recognize 25 different personal identification number (PIN) codes. Each code is face programmable with additional security features built in. FEATURES Digital keypad (wired or wireless) 25 codes/vacation/temp Compatible with all Linear (GTO) gate operator receivers. Will work with GTO's PRO1500, PRO2500, PRO3000, PRO4000, GTO's PRO1000, PRO2000, Mighty Mule swing gate operators and SL1000 slide gate operator. Simply set the dip switches inside the unit to match your other transmitters and receiver. Battery included. Can be mounted on a post outside and/or inside your gate. It is wireless and therefore easy to install. Range is within 30-50' of operator control box. The weather proof cover protects the keypad when not in use. Keypad will automatically light with first key press. The F310 can contain up to 25 different PIN's (Personal Identification Numbers). Each code is face programmable with additional security features built in. You can program a 4-digit code in and program it out. This is great for allowing temporary access to service people. Powered by 3 AA batteries (not included) or the gate operator's 12 Volt DC power source.