ALRE differential pressure switch JDW-3 JDW-5 JDW-10 differential pressure gauges differential pressure switch Oral, Germany to oversee the overpressure in air pressure or under pressure, and non-flammable, non-volatile gas. And applicable to oversee the gas discharge or flowmeter to protect electric spiral supervision filter to prevent the lack of air pressure or control air limit. Differential pressure switch JDW-3 JDW-5 JDW-10 technical data switching capacity: 1,5 (0,4) A, 12-of 250 V ~~ contact: conversion contact, terminal screws, gold contact degree of protection: IP 54 surrounding temperatures: -15 ... +80 ° C pressure transmission connection nozzle: 6,2 mm Color: Black Model factory default, and can adjust switch difference maximum pressure range depending on the range of adjustments PG JDW-530 ... 500 Pa15 ... 30 Pa5.000 PaG JDW-10400 ... 1.600 Pa30 ... 60 Pa5.000 PaG