Programmable Analog 0-10V 0-20mA 4-20mA 2-10V Display Meter Panel-mounted High Precision BRT VIDM ( Option [Standard type] has no relay inside and no RS485 MODBUS functions, pls do note that . ) Main Features Standard Type: Default 0-10V 0-20mA 2-10V 4-20mA display meter . RS485 port type and Relay output type are available. Default standardtype and RS485 port type : no relay inside, operating power supply DC 6-25V, power consumption 24V/40mA; Relay output type: operating power supply DC 8-25V, power consumption 24V/50mA; have polarity reverse and anti-surge protection functions. No RS485 MODBUS function 1-channel current or voltage signal input, selectable. Voltage signal input impedance: >30k, current input impedance: <250 0.56inch 4-byte LED tube display. Parameters are programmable through 3 buttons, convenient to use. RS485 port type supports standard MODBUS-RTU protocol, and supports communication among display meters. Relay output type has 1-channal normally open relay output, relay output load capacity: 3A, 30VDC/3A, 250VAC. Front view dimension: 79x43x25mm. installation cut-out size: 76.5x39.5mm RS485 port type : display meter address, baud rate, communication interval time, etc parameters are pogrammable. Relay output type : relay output status, conditions, etc parameters are programmable. Referential Wiring Circuits: Prameters Setting Instructions Prameters Codes Package Including: 1 x Original new 2-10V 0-10V 4-20mA 0-20mA Display Meter 1 x Professional User Manual (English)