On/Off Closed Loop Photosensor with Automatic Commission - Daylighting Controller

The On/Off Closed Loop Photosensor LS-102 by WattStopper is a single-zone daylighting controller designed for closed loop applications. It operates as a 24 VDC device with an extended sensing range of 1 to 1400 footcandles, requiring a low voltage power pack for operation. This photosensor provides precise on/off switching to optimize lighting control in indoor environments with natural light contribution, making it suitable for electrical distributors and lighting solutions providers focusing on energy-efficient control systems.

Specifications

• Operating Voltage: 12/24 VDC
• Power Consumption: 7mA @ 24VDC
• Output Signal: 24VDC; maximum 120 mA
• Dimensions: 2.4‚Äù diameter x 0.7‚Äù deep (61mm x 17mm)
• Operating Temperature: 32¬∞ to 120¬∞F (0¬∞ to 49¬∞C)
• Operating Humidity: 5% to 95% RH, non-condensing
• On Setpoint Range: 1 to 850 footcandles
• Status Indicator: Multi-function green LED
• Material: ABS, flame retardant, RoHS compliant
• Country of Origin: China
• UL Listed

Features

• Advanced digital multi-band photosensor with on-board microcontroller and LCD display
• 100¬∫ cone lens to block unwanted light and prevent false triggers
• Automatic setpoint calculation with calibration process for precise control
• Four user-adjustable parameters: on/off setpoints, off setpoint time delay, and ‚ÄúHold-On While Occupied‚Äù mode when paired with occupancy sensors
• Test mode for verifying settings accuracy and wiring correctness
• Control load status verification
• One-hour manual override capability via low voltage push button wall switch
• Programmable for most daylight conditions
• Indoor use only
• Five-year warranty

Downloads & Links

• LS-102 OEM Data Sheet
• JULY 2011 - Sustainable engineering firm selects WattStopper for LEED Platinum headquarters
• LS-102 Daylighting Controller
• LightSaver LS-102 Daylighting Controller