The RemoDAQ-8053+ is a 16-ch. Dry contact Digital Input Module, which also suitable for wet contact.

Specification:

Display		LED Indicators		Power
Power Supply		Power Requirement		10~30 VDC
		Power consumption		1W
Digital Input		Channels		16
		Input High level		4-30V
		Input Low level		0-1V
		Input Voltage		Dry contact: Logic level 0: close to GND Logic level 1: open Wet contact: Logic level 0: 2 VDC max. Logic level 1: 4~30 VDC
General		Watchdog Timer		Yes
		Temperature (Operating)		-20~70 ℃
		Humidity		5~95%, non-condensing
		Temperature (Storage)		-25~85 ℃(-13~185 °F)
		Interface		RS-485
		Communication Protocol		ASCII command & Modbus/RTU
		Communication Speed		Serial: From 1,200 to 115.2 k
		Comm. Distance		Serial: 1.2 km