UL 353 BULLETIN-2008《UL安全标准.限位控制器.评议提交截止日期:2008年5月11日》
Covers limit controls, furnace fan controls, and other interlocks intended primarily for use with heating systems, processing systems, and air-conditioning and ventilating systems.
Covers limit controls, furnace fan controls, and other interlocks intended primarily for use with heating systems, processing systems, and air-conditioning and ventilating systems.