ENGINEERING DATA SHEET EQUIPMENT EPM-112 28 VDC WINDSHIELD HEATER CONTROL UNIT Application: Small jets, helicopters, etc. Function: The control unit provides power to heating elements while monitoring the temperature of the windshield. It contains two independent channels, each rated for providing 1.4 kW to windshield heating elements. Characteristics: Temperature Range: -55°C to +85°C. Maximum weight: 600 gr, Typically 500 gr. Dimensions of case: 96mm (W) x 80mm (L) x 43mm (H). Dual control channel, each with 2 independent temperature sensor inputs. Features: Status reporting via an ARINC 429 on single bus at 100 kHz with 100 ms transmission cycle. Continuos BIT for high reliability operation. Protection against over-current due to wiring or heater elements short circuit and open circuit. Protection against over temperature and failure of sensors. External fail safe contactor control.

www.leachintl.com North America 6900 Orangethorpe Ave. P.O. Box 5032 Buena Park, CA 90622 USA Tel: (01) 714-736-7599 Fax: (01) 714-670-1145 Europe, SA 2 Rue Goethe 57430 Sarralbe France Tel: (33) 3 87 97 98 97 Fax: (33) 3 87 97 84 04 Asia-Pacific Ltd. 20/F Shing Hing Commercial Bldg. 21-27 Wing Kut Street Central, Hong Kong Tel: (852) 2 191 2886 Fax: (852) 2 389 5803 Data sheets are for initial product selection and comparison. Contact Leach International prior to choosing a component. Date of issue: 7/06 - 41 - Page 1 of 3