Features : * Compatible with 728ULT , 738ULT , Spectra SP Series , Digiplex and Digiplex EVO  * 32 wireless zones (Spectra SP and EVO only)  * Maximum number of remote controls : 8w/Esprit , 32w/SP , 999w/EVO  * Remote control compatibility  * EVO : REM1 , REM2 , REM25  * SP : REM1 , REM2 , REM3 , REM25  *Esprit : REM1  * Stand Alone : REM1  * Wireless PGMs (8w/EVO , 16w/SP)  *Functions with all Mallegan transmitters including 2WPGM  * Supports two RPTI and eight K32LRF / K32IRF (Spectra SP only)  * In-field firmware upgradeable via CV4USB and Winload  * RF jamming supervision  * Low battery , tamper and check-in supervision  * Transmitter signal strength display  * 3 PGM outputs and 1 optional output  * Noise level test and indicator .   Model : PA3813     Manufacturer : Paradox