DANLERS TWSW Installation Notes Download Page 1

DANLERS Limited, Vincients Road, CHIPPENHAM, Wiltshire, SN14 6NQ, UK.

Telephone: +44 (0)1249 443377   Fax: +44 (0)1249 443388   

E-mail: [email protected]    Web: www.danlers.co.uk

Company Registered Number 2570169   VAT Registration Number 543 5491 38

Products available from DANLERS

•  PIR occupancy switches • Daylight linked dimmers • Manual high frequency dimmers 
•  Photocells  •  Radio  remote  controls  • Time  lag  switches  •  Outdoor  security  switches 
•  Dimmers • Heating, ventilation and air-conditioning controls • Bespoke / O.E.M. products

Please call for more information or a free catalogue.

This product conforms to BS EN 60669-2-1.
Please ensure the most recent edition of the appropriate local wiring regulations are observed 
and suitable protection is provided e.g. 6 amps over current, 1kV over voltage. Please ensure 
that this device is disconnected from the supply if an insulation test is made. 
This product is covered by a warranty which extends to 5 years from the date of manufacture.

Precautions and Warranty 

Installation notes

  Twilight Switch
 

TWSW

DANLERS Twilight Switch can be surface mounted onto an external 
wall.  The  TWSW  will  switch  a  lamp  load  on  during  the  hours  of 
darkness. The light level at which the lamp will switch on and off is 
set by a lux adjuster. 

Loading

The TWSW should only be connected to a 230V 50Hz ac supply.
It can switch the following type of loads:
•  6 amps (1500W)  
    

Incandescent or mains halogen lamps  

    

(recommended with integral safety fuse)

•  4 amps (1000W) 
    

Electronic or wire wound transformers. 

    

Fluorescent lamps (high frequency or soft start)

•  2 amps (500W)   

    

Compact fluorescent or LED lamps (about 50 lamps)

•  1 amp (250W)    
    

Most metal halide lamps and fans.

06/04/11

INS971 TWSW

Variants

As DANLERS design and manufacture in the UK, variants can be supplied, 

coded by the following suffixes, applied in this order:

•  12V or 24V   

12V or 24V ac or dc operation 

•  VF 

 

 

Volt Free contacts 

•  NC 

 

 

Normally Closed contacts 

•  G or LG 

 

Gold or Logic Gold contacts

The details of these variants are covered by an enclosed variant 

addendum if applicable.

Trouble shooting

 

The lamp switches off about 5 seconds after it switches on. 

•  To much artificial light is entering the dusk switch.

The lamp switches on too early in the evening. 

•  Move the Lux adjuster further towards clockwise.
The lamp switches on too late in the evening. 

•  Move the lux adjuster further anticlockwise.
The TWSW stops working. 

•  Ensure the unit is mounted correctly so that no water can enter.

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