Megatronix TW70 5-Button 2-Way LCD Paging FM FSK Replacement Transmitter Remote 433.92MHz FCC H50TR05 H5OTR05 5-Button 2-way LCD paging transmitter remote (Replacement for M11RF, M11RF-LCD, XT-85S, XT-85LCD, XT-855LCD) FCC ID: H50TR05 H5OTR05 (ONLY BLUE AND RED SIDE BUTTONS) (Replacement for H50T18 H5OT18, H50TR03 H5OTR03, H50TX03 H5OTX03) FM, frequency-shift keying (FSK), 433.92MHz, AAA battery powered Works for M11, M11A, RS-850LCD, RS-855LCD, RS-860LCD Compatible with select Autopage, Commando, Marksman, Megalarm, TRC, Viking