12.1" Openframe LCD SAW touchmonitor Both RS232 and USB interface ... (line) voltage: 100-240 VAC, 50-60 HzOutput voltage/current: 12 volts at 4 amps maxEnvironmentOperating Temp.0~50°CStorage Temp ... InterfaceUSB and RS232CertificatesETL ,FCC,CE,RoHS Openframe touch LCD monitor with 12.1"SAW Touch screen