Westire 9500


Reduces power consumption to your specification, delivering cost and energy savings


The Westire 9500 Dali dimming photocell is designed to reduce power consumption and is compatible with all 0 – 10 Volt LED drivers.



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


  • Compatible with all 0 – 10 volt LED drivers

  • Incorporates all the features of the Westire gold standard dust-dawn 8480 & 9490 photocells

  • Part-night, On/Off & Dimming schedules programmed to your specification

  • Worlds most advanced A.I. Solar Time Clock algorithms

  • Innovative overvoltage protection, protecting LED driver & light engine

  • Self-correcting dimming and part-night function

  • 320 Joule standard MOV protection, higher protection on request.

  • Worlds top brand electronic components and materials used

  • Polycarbonate housing is ultrasonically bonded, UV stabilised and rated to IP68.

  • Upward facing units are designed to be self cleaning.

  • 100% product testing; 48 hour burn-in, electrical and final inspection.

  • Engineered, assembled & tested in our Irish manufacturing facility

  • World’s top brand electronic components and materials used
  • Delivering standalone dimming:
    – Factory Standard Dimming Schedule or
    – Customer Preference Dimming Schedule
  • Fits  all LED luminaires equipped with ANSI/NEMA 5 & 7 pin twist lock sockets
  • Dimming & controlling all types of outdoor street, road, security, amenity and campus lighting
  • Interfaces with all Dali D4i LED smart drivers
  • Wall mounting socket and bracket available

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


Dimensions86.3 mm Ø x 53.34 mm H
3.4” Ø x 2.1” H
Connection TypeNEMA /ANSI Twistlock
Warranty8 years
Mains Supply85V - 305V AC
50/60 Hertz
Surge Protection320 Joule 12,000 Amps
Maximum Load Current (A)10 Amps
Switching Time Delay10 seconds or on request
Operating Temperature-20° C to + 80° C
-4° F to + 176° F
Enclosure Protection RatingIP68 (Ultrasonically bonded)
Standards ComplianceANSI C136, IEC 60929
(Annex E) IS EN 9001: 2015
ROHS Compliant
Communications0 - 10V
Switching Ratio1:05 to 1:3 - Inverse ratios available
Dimming OptionsMultiple options available
Light Level Switching35 Lux On / 10 Lux Off as standard. Other levels available on request.
Time Reference Stabilization< 3 days
SwitchingRelay zero point micro controlled switching