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Two- and Four-Wire Head & Terminal Base Smoke Detectors S-711U Photoelectric Smoke Detector Technical Specifications Electrical Voltage 8.5 -33VDC, non polarity sensitive Maximum ripple (peak to peak) 10% (Vp - p) Typical standby current (24V) 70 µA Typical alarm current (24V) up to 60 mA max, if not limited by control panel Photoelectric Sensitivity 2.85%, + 0.37, – 1.00% Operating temperature 32°F to 120°F (0°C to 49°C) Operating humidity range 0 to 95% Non-condensing RFI immunity 20 V/m min; 0-1000 MHz Remote LED output current 5 mA min, 8.5 mA max Drift compensation adjustment 1.0%/ft. max Compatibility Heads: 711U; Bases 701U, 702U Environmental Heat Sensor Ratings (721UT, 741UT, 713-5U) Fixed 135°F/ Rate of rise 15°F/min., >105°F (8.3°C/min., >40.6°C) Maximum wind velocity 300 ft/min or Field wiring size 12-18 AWG Remote test input (721UT) 100 ohm max Reset voltage 2.5V max Reset time 1 second max UL two-wire compatibility identifier S10A (711U, 721UT, 713-5U) , S11A (731U) Physical Color White head and base Detector head dimensions 4” D x 1.75” H (10cm x 4.44cm) Base dimensions 701U, 702U: 6" D x .06" H (15.24 cm x 1.3 cm) Total height, (head and base) 1.98” (5 cm) H Regulations Listing UL 268, FM, CSFM, MEA approved