The SPU.6-C2 & C4 are drop mounted and suitable for fixed or swivel mounting.

Both options utilise the SPU.6-C sensor head, they can connect directly to SPECS E-Bus or DALI Bus.

  • High performance linear photocell – range | 2000 lux; resolution | 2 lux
  • 360 degree presence coverage via a quad element pyrosensor with adjustable sensitivity
  • Programmable multi-command infra-red receiver, directional with 5m range type
  • Includes LED response indicator with visual self check in pre-commissioned mode
  • Each control element is individually software programmable and may control any system group
  • Can be supplied in any RAL finish to match surroundings
  • This device can be supplied with a variety of mounting options



  • Currently compatible with Eutrac and Global Track Adaptors
  • Compact conical design, ideal for exposed services areas utilising track systems
  • Can be supplied with a 20mm plastic conduit drop rod



  • For surface mounting to a circular conduit box, Besa box, or a flat surface using suitable pan head screws through the two screw slots; screw threads on conduit boxes are typically 4mm
  • Compact conical design, ideal for exposed services areas requiring directional presence detection
  • Supplied with a 20mm plastic conduit drop rod which can be cut to size

Contact our Team

Tel: 01992 450126


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Download Datasheet
SPU.6-C2 & C4 SPECIALITY COMPACT DUAL BUS SENSORS C2: 55 X 66, C4: 113 X 66 N/A Two Wire Combined Signal And Supply Connection VIA SPECS E-Bus Or DALI 2-2000 LUX Yes, D=2.8 x mount height 0 – 40 Degrees C Yes 20

Thank you Simmtronic, for your professional, fast and reactive support with the delivery of these projects.

Adam Scadding

EDDS Limited

Simmtronic have delivered a large number of technically challenging projects for DBS and consistently continued to provide outstanding service. Their support, guidance and help throughout the process has been exceptional, working closely with our design teams to ensure the right solution for the project and a sound understanding of the brief, with our delivery teams to ensure the installation and commissioning are trouble free and then providing fantastic after care to the customer. They have added true engineered value into the projects they have been involved in for Derry Building Services.

Geoff Caborn

Derry Building Services

Simmtronic have been a valued member of the DBS supply chain for over 10 years. Their pro-active and collaborative approach to lighting controls from the design stage, through to commissioning is highly valued by both our Design and Delivery Engineers.

Matt Hallam

Derry Building Services

Over the years I have really appreciated the Simmtronic ability to provide responsive support and listening to projects and clients needs. More recently the Simmtronic team has shown the capability to embrace the connectivity requirements of the Internet of Things by quickly adding MQTT to their range of integration protocols. This will greatly facilitate telemetry applications in buildings and the development of interconnected solutions that will make buildings more usable and easier to operate.

Francesco Anselmo


Landsec have consistently used Simmtronic Lighting Control Systems across our new London developments for over 15 years. Simmtronic understand our requirements and get involved at the very early stages of schemes, assisting consultants in achieving the optimum design solution, often taking the lead.  They always overcome the programme challenges they are faced with on site, delivering a quality, fully tested and operational solution, on time and to budget. Simmtronic undertake the maintenance and servicing across much of our London portfolio, they have a customer focused and flexible approach that suits the needs of our business and as well as our customers.

Mark Ponzini


Simmtronic as an organisation has been, for the last 18 years, by far the best performing and most reliable lighting control system I use. From design through to commissioning and soft landings with the landlord teams Simmtronic always deliver on my projects. Simmtronic technology evolution is not just pushed through like others, but rather properly tested internally first, giving us as client teams the assurance that what Simmtronic say they can offer is 100% delivered, an absolute must with fast track major projects.

Alan Williamson


Simmtronic has constantly been available at an early stage to engage both with the designers and the Contracting team to assist with design solutions and to test options. This ultimately assists us in de-risking the project during the commissioning phase which usually defines when the project is completed. Simmtronic is seen as ‘industry standard’ and it is always encouraging to see them involved.

Jo Benson

Derwent London