12V DC @ 25 MAH; 30 KHZ–80 KHZ RECEPTION; NOMINAL RECEPTION ANGLE: 45º OFF AXIS; 35-FT RECEPTION DISTANCE; CFL PROOF & PLASMA FRIENDLY; REQUIRES 3-CONDUCTOR, 24-GAUGE CABLE FOR 200 FT RUNS, 22-GAUGE CABLE FOR 600 FT RUN, 20-GAUGE CABLE FOR 2000-FT RUNS & 18-GAUGE CABLE FOR 5000-FT RUNS; MAX CABLE LENGTH: 1 MILE WITH 18-GAUGE CABLE; MAX CURRENT OUTPUT: 100 MAH; DRIVES UP TO 4 INFRARED EMITTERS CONNECTED IN SERIES OR 4 DUAL EMITTERS USING KNOLL® KNLIR54 OR KNLIR55 CONNECTION BLOCKS; REQUIRES KNLPS1202 OR KNLPS1205 POWER SUPPLY; BLUE BLINKING TALKBACK LED INDICATES INFRARED RECEPTION; 3-SCREW TERMINAL & RJ-45 CONNECTOR ON UNIT; DIM: 1.75"L X 1"W X 4"D; WHITE