Wireless Battery-Free Light Sensor
SKU: E9T-LLS
ILLUMRA Wireless Battery-Free Light Sensor Self-Powered Daylight Harvesting
Self-powered wireless light sensor that automatically dims artificial lighting when natural daylight is present — saves up to 60% on lighting energy. No wiring, no batteries, no maintenance.
Features:
- Up to 60% energy savings via daylight harvesting
- Battery-free (operates 3 days in darkness when charged)
- 0-1020 lux measurement range
- 80 ft wireless range (902 MHz)
- BACnet, RS-232, Ethernet compatible
- Open-loop and closed-loop applications
Compliance: RoHS, LEED eligible, IGCC Standard 189.1
Ideal For: Offices, schools, warehouses, retail, commercial buildings requiring daylight harvesting for energy code compliance
Also Available:Wireless PIR and Light Sensor (motion + light combo)
Key Features
Categories:Wireless Sensors
Voltage:120V
Frequency:902 MHz
Protocols:902 MHz Protocol
Specifications
| Frequency | 902 MHz EnOcean RF Transmitter |
| Measurement range/resolution | 0 … 1020 lux / 4 lux |
| Typical Accuracy | +-5 % at full scale / 68°F |
| Measurement Interval | 1 Minute |
| Transmission Interval | Immediate if change > 50lux versus last transmission; Heartbeat every 20 … 30 minutes (affected at random) |
| Transmission Range | 80 ft. (25m) |
| Dimensions | 6.30” L x 2.36” W x 1.15” D (160 mm x 60 mm x 37 mm) |
| Weight | 4.4 oz (125 g) |
| Mounting Position | At the ceiling–close to ambient light source (window) |
| Environment | Indoor use only / 32° to 140° F (0° to 60° C) 20% to 85% relative humidity (non condensing) |
| Agency Compliance | FCC; IC; RoHS |




