Additional 12mm CT (current transformer) clamp set for the Current Cost TREC monitor system for use with Economy 7 or three phase supplies.  When additional CT clamps are connected to the transmitter, the '2' and/or '3' icons in the upper right hand corner of the display unit will be activated.  The calculated values on the TREC display unit will be the sum of all connected CT clamps.

These are ideal for users of the Current Cost system (TREC / Mini Transmitter) who want to monitor a second meter or three phase supply. User needs one existing 12mm CT sensor jaw without a socket - for correct calibration. Very easy to fit and connect.  Accommodates max cable size 12mm diameter. Max 80A

IMPORTANT: Please note that these CT clamps are suitable for use only with the Current Cost TREC monitor or mini transmitter.

Bye Bye Standby Wall Switch