Integrated Optical Module for Smoke Detection Features: Supports UL-217 edition 8/ UL-568 ed. 7; EN-54; GB..; ISO Lowers Nuisance Alarms using a Dual Wavelength detection with higher SNR and dynamic range. 3X Lower power dissipation enables smaller/ cheaper batteries Integrated Optical Module (3.8mm x 5mm x 0.9mm with 1 blue LED, 1 IR LED and 2 Photo diodes) simplifies EMC design, allows for greater diversity of industrial design options and results in 75% fewer discrete components. Loop calibration at final test reduces calibration challenges with smoke detector products. Supported by ADI designed smoke chamber manufactured by Accumold, 28800X. (Please see EVAL-CHAMBER Mechanical Dimensions (PDF), also under Resources below)