ESP Sensors with integral SCIs

The core range of ESP Sensors are also available with integrated short-circuits isolators (SCIs):

• ALN-EN(SCI) – optical smoke with SCI
• ATJ-EN(SCI) – heat with SCI
• ACC-EN(SCI) – multi with SCI

Each features a 3 colour LED indicator:

Solid RED indicates a fire, flashing GREEN is polling, and solid AMBER indicates a short circuit.

The SCI sensors have a fourth terminal which enables the SCI functionality, they must therefore be fitted to a YBV-R/4 four-terminal mounting base to maintain the SCI functionality.