GTO F310 Mighty Mule FM137 Digital Wireless Keypad
GTO Digital Wireless Keypad, Features and Specifications: Compatible with all 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 or to disallow the mother-in-law. Simply tell her the thing must have malfunctioned.