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Summary The Electronic Photocontrol JL-103 is applicable to control the passage lighting and doorway lighting automatically in accordance with the ambient lighting level. This product has been listed by UL Inc and is comply with the Standard for Non-industrial Photoelectric Switches for Lighting Control UL773A. Quick Details: Name: Photoelectric Switch Usage: Auto on/off For Outdoor Lighting Theory: Optical sensor Rated Voltage: 120V AC Applicable Voltage: 110-130V AC Power consumption: 1.2 Watts Max Rated Frequency: 50/60Hz Rated loadings: 500W Tungsten,850VA Ballast On/Off Level: 10-20Lx On; 30-60Lx Off Ambient Temp: -40-158℉ Related Humidity: 99%RH Certification: UL listed Warranty: 1 Year Installation Disconnect power, remove junction box cover, place the SWITCH in knockout hole (diameter:5/8 inches)and fasten with locknut. Do not install the switch with the Photocell facing artificial or reflected light. This will cause the unit to cycle on and off at night. Initial Testing It is normal for the SWITCH to take several minutes to turn off when first installed. To test “turn on” during daytime, cover its eye with sliding the metal strip mounted. Do not cover with finger because light traveling through fingers may be great enough to keep the switch open. Test will take approximately 2 minutes. Package Contents: 2 of Photocell Control Sensors Applications: Provides automatic control of nighttime security or safety lighting forentrances, recreational areas, farms, walkways, parking lots, and othersimilar applications. Also works well to control protective lighting ofhomes,schools, and commercial buildings.