This product is a TWC-3 Wheel Chock with a switch incorporated which can be connected to Traffic Lights, Dock Levellers, Dockloadas, Doors and many more, to identify when a vehicle is in position.
This Wheel Chock houses a sensor, which has the ability to transmit an electrical signal via a built-in switch and a flexible cable, through a junction box to equipment, either to isolate, park or make safe a Dock Leveller or similar equipment. This unit can be used in conjunction with Thor Traffic Lights, (Click for details).
The chock is manufactured from aluminium, has a coiled cable extendable to 8 metres and includes a 5m length of retaining chain for security and to prevent damage to cable connections.
Thorworld engineers recommend that a 24 volt isolated and fused circuit be incorporated into the equipment being safeguarded, and advise that it should be used for signal purposes only.