IP66 ATEX H hydrogen gas detector with advanced catalytic sensor, designed to measure explosive gas concentrations (0-100% LIE) accurately thanks to dynamic microprocessor calibration. Equipped with 4-20 mA output, it offers the option for a 2-relay board (alarm and fault). Made of sturdy dustproof metal housing with sintered filter, it is easy to configure and calibrate via PC software. 12-24 Vdc power supply, -10°C/+60°C operation. Ideal for reliable and safe applications.