RS485, RS422, RS232 surge protection and 4~20ma surge protection for DC 12V, 24V, 48V. 2 lines and 4 lines OEM/ODM SPD manufacturer
RS485, RS422, RS232 surge protection and 4~20ma surge protection for DC 12V, 24V, 48V. 2 lines and 4 lines OEM/ODM SPD manufacturer