* Low Temperature, safe ＆ Durable.
* Low Power, Environmental Protection.
* Special photoelectricity control,three steps current application.
* Long Life with 500000 Operations.
* MOV Provides Reverse Current Protection.
* Superior Strength Aluminium Alloy,Solid Stain-less Steel Bolt.
* Double protection for loading current.
* Auto-relock if no Action within 5 secs.
* Certificate:CE＆MA
* Photoelectricity Control,Low Temperature，