The telephone types of the subway official telephone system mainly include dispatch telephones, inter-station traffic telephones, in-station telephones, and vehicle...
This weatherproof phone is completely contained in a corrosion-resistant cast aluminum alloy weatherproof housing. The door provides complete protection against...
Industrielle telefoner er vandtætte, støvtætte og elektrostatiske afladninger. Den industrielle telefon anvender en trykstøbningsskal af aluminiumslegering, som har høj...