The NC899ERM Multi-Purpose Call Latch Module allows any device with a normally open switch to generate standard and emergency calls on an 800 Series Call System and pro- vides a reset facility for cancelling these calls. Features A multi-purpose monitoring module that allows any device with a normally open switch to generate a Standard or Emergency call on an 800 Series Call System. Includes a Red reassurance LED that illuminates when a call is made and an onboard magnetic reset facility for cancelling calls. Measures just 30 x 20 x 15mm. Multiple wiring options via the device's coloured leads Ideal for applying 800 Series call point electronics to custom-made switch assemblies.