Westire 8481, 8481H & 8483

Longlife Photocells

The most accurate multi voltage dusk to dawn photocell on the market for energy and cost savings


The Westire 8481, 8481H & 8483 North Facing Longlife photocells utilises Westire’s Eye Response filter silicon light sensor and microprocessor control. This accurate combination provides the best energy saving and reliable operation.


Engineered in the EU with a 35 year design life and manufactured in-house using only high quality name brand components, the 8400 series photocells are renowned in the industry for their unparalleled quality and reliability.

Features & Benefits

  • Designed for modern light sources like LED, Induction, Plasma, HPS, HID and many more.
  • Available in universal power supply capable of operating on voltages from 105 to 305 Volts 50/60 Hz.
  • Energy efficient design with a average power consumption < 0.25 watts.
  • Westire Patented Relay Assisted Triac (RAT) switching technology protects the relay from in-rush current.
  • Polycarbonate housing is ultrasonically welded, UV stabilised and rated to IP67.>
  • Upward facing units are designed to be self cleaning.
  • 100% product testing; 48 hour burn-in, electrical and final inspection.
  • Intertek ETL Listed and RoHS compliant.
  • Available with up to 840 Joule MOV protection.

The upward facing daylight sensor has a full view of the open sky resulting in higher switching accuracy.

Cap Colours

Various housing colours are available, black, blue, brown, green, red and grey

Connection Type

The 8481 Long Life Photocell has a NEMA 3 blade plug in locking electrical connection


Dimensions 8481 & 8481H77.5 mm D x 76.8 mm
3.05” D x 3.02” H
Dimensions 848378.4 mm D x 61 mm H
3.08” D x 2.40” H
Warranty12 years standard
20 years available on request
Mains Supply105 - 305 Volts AC
50/60 Hertz
Average Power Consumption< 350 mW nominal
Surge ProtectionStandard: 132J 4.5kA
Optional: 320J 12kA, 420J 20KA
Configurations available up to 840 Joules
Operating Temperature-40° C to + 80° C
-40° F to +176° F
Standards ComplianceEnvironmental RoHS, EN55015, EN61547, EN6100- 3-2, EN6100-3-3, ETL UK 773, CSA 22.2. IS EN ISO 9002: 2015, ANSI C136.10, BS 5972
Enclosure Protection RatingIP68
Switching Levels1.5fc ON to 2.25fc OFF
16.1 Lux ON 24.2 Lux OFF or as specified
Switching Ratio1 - 1.5. Other ratios available on request
Light sensorEye Response IR filtered silicon light sensor
Switching Time Delay0 to 25 Seconds Other Time
Connection TypeNEMA 3 Pin connector
ANSI C136.10