This is the transistorised miniature version of the IS 12. It is a double pole relay complete with LED indication. It has been designed to allow low current, low voltage signalling outputs from control equipment to activate the relay without overloading the signalling circuits. The trigger voltage may be negative or positive and between 5 and 15 Volts with an approximate current drain of 4 mA. The trigger polarity is selected by a plug in link.
It is supplied as an individual unit or in strips of 4 modules.