The Firefly 310LID22K is a two-button keychain transmitter designed as a compatible replacement for Linear Delta-3 fixed-code systems. Operating at 310 MHz, it works with Delta-3 receivers and operators commonly used on residential and light commercial garage doors and gates. This aftermarket remote provides dependable one-touch control in a compact form factor, making it an easy upgrade or spare for users standardizing on the Linear Delta-3 platform.
Programming is straightforward: set the internal DIP switches to match the code settings on your existing Delta-3 receiver or working transmitter, then test for proper operation. Because it uses the Delta-3 fixed-code format with DIP-switch configuration, no “learn” procedure on the operator is required. For best results, verify that your system is the 310 MHz Linear Delta-3 type; this model is not compatible with Linear MegaCode (318 MHz), Multi-Code, Genie Intellicode, LiftMaster/Chamberlain Security+ or other rolling-code formats. Typical applications include replacement or additional remotes for garage door openers, gate operators, and access control receivers that specify 310 MHz Delta-3 compatibility. Use only in line of sight of a moving door or gate and keep remotes out of reach of children.