Good optocoupler performance for more stable power capacity and excellent temperature characteristics No contact, no noise, internal working method, no spark noise generation The shell is made of high-temperature flame-retardant transparent material, which is bright, , fire and dust resistant, sturdy and durable. Solid state relays have no mechanical components and are operated by thyristors to complete contact work The galvanized aluminum plate has excellent dissipation of, Manufacturer: Bumdenuu