The Easy To Use, Easy To Fit Timelag Switch That Turns Off Lighting Automatically With An Adjustable Time Delay;No More Lights Left On - Save Money;Ideal For Staircases, Hallways, Corridors And Storage Cupboards;Single Gang Design Suits New Installations or Replaces Existing Wall Switches;Fits Standard 20mm or 25mm Single Gang Accessory Boxes

• Pneumatic Time Delay Switch

Pneumatic Time Delay SwitchElkay