Megatronix TW72 4-Button 2-Way LCD Paging Replacement Transmitter Remote 433.92MHz FCC H50TR17 H5OTR17 4-Button 2-way LCD paging transmitter remote (Replacement for CATX2LCD, CATX650, CA-RFLCD1, M8ARF-LED, M9ARF-LCD, M12ARF-LCD, X4RF-LCD, XT-42LCD, XT-43LCD, XT-72LCD, XT-73LCD) FCC ID: H50TR17 H5OTR17 (Replacement for GOH-PAN08, GOH-PAN09, H50TR05 H5OTR05 (NOT BLUE AND RED SIDE BUTTONS), H50TR07AM H5OTR07AM, H50TR08AM H5OTR08AM, H50TR11 H5OTR11, H50TR12 H5OTR12, H50TR13 H5OTR13, H50TR15 H5OTR15, H50TR29 H5OTR29) AM, supereheterodyne (SAW), 433.92MHz, AAA battery powered (Daily timer start and temperature control start features not available on this remote if old remote has clock and temperature) Works for CA-140, CA-170, CA-540, CA-640, CA-650, M8A, M9A, M12, M12A, PLUS-5800, PLUS-6800, RF-420, RF-425, RF-425A, RF-520, RF-525, RS-622, RS-625, RS-625A, RS-665-2W, RS-665-2WA, RS-720, RS-725, RS-727, RS-727A, X4, X9 Compatible with select Alert, Autopage, Bulldog, Carbine, Carroll Shelby, Code Alarm, Marksman, Megalarm, Viking (Not for Datastart, Prestige, Pursuit, TRC, Xpresskit)