The MI-LPB2 is an addressable reflector- type linear optical beam smoke detector, designed to operate as a component of an intelligent fire alarm system. It operates primarily on the principle of light obscuration utilising an Infra-Red beam. Optical beam smoke detectors are particularly appropriate for protecting buildings with large open spaces such as warehouses, atriums etc. The MI-LPB2 detector is a combined transmitter/receiver unit that can be directly connected to an analogue loop circuit. The Infra-Red transmitter generates a beam of light towards a high efficiency reflector. The reflector returns the beam to the receiver where an analysis of the received signal is made. The change in the strength of the received signal is used to determine the alarm condition. Alignment of the detector is simplified with the aid of the detector’s "gunsight" targeting device. Alignment of the detector with the reflector can then be “fine tuned” with the aid of a numerical signal strength indicator.

• Combined transmitter and receiver unit • Range 10-100 metres • 4 x fixed sensitivity/threshold levels • 2 x automatic variable sensitivity modes • Operates in the Infra-Red light spectrum • Numerical indicators to aid beam alignment • Standby, fault and alarm LED indicators visible from the front and bottom • ±10° horizontal and vertical beam alignment • Automatic drift compensation • Loop powered • Complies to EN54-12 • Extended Warranty

electrical Operating Voltage Range: 15 to 32Vdc (24Vdc nominal) Typical Standby Current: 2mA @ 24Vdc (No communications, LED off) Maximum Alarm Current (LED on:) 8.5mA Maximum Alignment Current 20mA mechanical Weight: 1.77kg Max Wire Gauge for Terminals: 2.5mm2 Colour: White trim, black box Material: Bayblend FR110 trim, Lexan lens cover, Noryl backbox Reflector: 200 x 230mm (10 – 70m range, supplied as standard)