Acro Mini DC 


Engineered for 12v – 24v DC environments


The Acro Mini DC photocell utilises a filtered silicon based ambient light sensor and microprocessor control. This accurate combination provides the best energy savings and reliable operation.


Engineered in the EU with a 15 year design life and manufactured in-house using only high quality name brand components, the Acro series photocells are renowned in the industry for their unparalleled quality and reliability.

Ideal for use with lighting or solar energy applications

Features & Benefits

  • Ideal for use with all types of solar lighting or solar energy applications.
  • 12V to 48V DC input.
  • Can be installed within a Luminaire with the ambient light detector head protruding through the canopy facing the open sky for accurate Dusk to Dawn
  • Unique fully encapsulated electronic circuitry and light sensor. Completely impervious to moisture.
  • UV stabilised polycarbonate housing is rated and tested to IP 67.
  • Incorporates Westire’s unique AcRo ambient light sensing microprocessor technology.
  • Sensor window designed to survive all types of outdoor conditions.
  • Sensor drift is zero over the photocell guaranteed life.
  • A full electrical and 48 hour operational burn-in test is performed on every unit before leaving the factory.


DimensionsOverall Housing:
55mm L x 33mm D x 48mm H
2.16” L x 1.3” D x 1.88” H

Sensor Window
12mm Ø x 18mm (M20)
Warranty8 years standard.
10 years available on request.
DC Supply Voltage12V to 48V Direct Current
Power Consumption
Acro Mini DC standard
12V 0.22W
24V 0.24W
36V 0.28W
48V 0.29W
Power Consumption
Acro Mini Low Power
12V 0.094W
24V 0.11W
36V 0.13W
48V 0.16W
Maximum Load Current (A)10 Amps AC 5 Amps DC
Operating Temperature-20° C to +70° C
-4° F to +158° F
Enclosure Protection RatingIP67
UV stabilised Polycarbonate housing and unique light diffusion lens. Enclosure provides full protection from internal luminaire light leakage and ‘side-on’ internal refraction and IP67 sealing properties.
Standards ComplianceEnvironmental RoHS, EN55015,
EN61547, EN6100-3-2, EN6100-3-3, ETL
UK 773, CSA 22.2.
IS EN ISO 9002: 2015
ANSI C136.24 2004
Switch 'On' light levels10, 15, 35, 55, 70 and 100 lux as
standard (others on request)
Switching Ratio1:0.5, 1:1 or 1:1.5 ratios others on
Ambient Light SensorFiltered ambient light photodiode
Switching Time Delay25 Seconds
Photocell Load Switching:Relay Switching (Latching or non – latching depending on the application)
Switching Options:Dusk to Dawn.
Part night option available.