Conducts an automatic test every three seconds, ensuring it's always ready to protect. If the device fails the test, the indicator light flashes to signal that the GFCI should be replaced. It also has our proven SafeLock™ Protection feature: if critical components are damaged and protection is lost, power to the receptacle is disconnected. Features & Benefits: Button colors match the device face.; LED rated at 186 milliwatts at 120V.; Meets National Electrical Code® Tamper-Resistant requirements.; Sealed night light with high-impact-resistant Lexan® lens prevents tampering.; Prevents line-load reversal miswire: no power to the face or downstream receptacles if wired incorrectly.; FSUL Listed (Federal Specification WC596).; Thinner than competitors' GFCI Receptacles: leaves more room for wires in the box.; Side or internal screw-pressure-plate back wire with #10-#14 AWG solid or stranded copper wire.; Supply Voltage Range: 102-132 VAC; Extra-long strap.; Trip indicator light (red LED).; Supplied with matching TP wall plate (except 1597NTLTRNICC4, 1597NTLTRABCC4 and 1597NTLTRDBCC4).; Photocell turns night light ON in dark, OFF in daylight.; 20 Amp feed-thru capacity; High-impact-resistant thermoplastic construction.; Protects children: patented shutter system helps prevent improper insertion of foreign objects.; 10kA short circuit rating.; Feed-thru wiring configuration allows GFCI to protect downstream receptacles.; Ground screw has back-wire clamp for easy installation.; Two receptacles.; Exceeds UL 943 voltage surge requirements; survives 100x the required UL 3kA/6kV voltage surge test cycles.; Class A rated GFCI.; Conducts an automatic test every three seconds, ensuring it's always ready to protect. If the device fails the test, the indicator light flashes to signal that the GFCI should be replaced. It also has our proven SafeLock protection feature: if critical components are damaged and protection is lost, power to the receptacle is disconnected.; Dual-direction test and reset buttons.; Supply Voltage: 125VAC, 60 Hz; Trip Time: 0.025 sec., nominal per UL Standard; Mounting screws are shipped captive in the device and wall plate for easier installation.; Trip Threshold: 5 +/- 1 m; Energy-efficient LED has average 20=year life expectancy, eliminating bulb replacement.; Meets 2015 UL requirements.; Night light uses cooler LED illumination.; Two back-wire holes per terminal.; Auto-Ground clip assures a positive ground to metal box. - Available Options: Combination Tamper-Resistant 15A Self-Test Night Light/GFCI, Antique Brass; Combination Tamper-Resistant 15A Self-Test Night Light/GFCI, Nickel; Combination Tamper-Resistant 15A Self-Test Night Light/GFCI, Light Almond; Combination Tamper-Resistant 15A Self-Test Night Light/GFCI, White; Combination Tamper-Resistant 15A Self-Test Night Light/GFCI, Black; Combination Tamper-Resistant 15A Self-Test Night Light/GFCI, Ivory; Combination Tamper-Resistant 15A Self-Test Night Light/GFCI, Dark Bronze