Name: Chandow WTD978C GPRS I/O Module
Brand: Chandow
Availability: InStock

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Model	WTD 940X	WTD 950C	WTD 966C	WTD 978C
Digital Input
Channel	16 Channels isolated/Counter			8 Channels isolated/Counter
Dry Connection	Supported			Supported
Wet Connection	Bi-directional: High:+10V~+50V;Low:≤3V			Bi-directional: High:+10V~+50V;low:≤3V
Isolation Voltage	3KV Vdc			3KV Vdc
Digital Output
Channel		16 Channels Isolated/PWM		8 Channels Isolated/PWM
Type
Mode		Collector Open(50Vdc)		Collector Open(50Vdc)
Load Current		500mA Max		500mA Max
Isolation Voltage		3KV Vdc		3KV vdc
Ralay Output Parameter
Channel			3 channels Type A/C
Breakdown Voltage			750Vac (50/60Hz1min)
Contact Load (Resistance)			TypeA: 5A@250Vac 5A@30Vdc TypeC: 10A@250Vdc 10A@30Vdc
Isolation Resistance			1GO.Min@500Vdc
Switching Time			Less than 10ms
operating Speed			6 Times/Minute
Board
OS	FreeRTOS
Processor	STM32(Cortex-M3)
CPU Clock	72MHz
LED Indicator	Power,Communication,Channel LED
Watch Dog	System Watchdog,Communication Watchdog
Protection	Over Current,Over Voltage,Over Temperature,Anti-reverse
Communication	Wireless
Firmware Update	MiniUSB Inside
Protocol	GPRS
Structure and Parameter
Case	ABS Plastic
Dimmension	9810647mm
Lead Rail	DIN35mm
Power Input	10~48V (24 Vdc Rated)
Power Consumption	~2.5W(24 Vdc)		~4W(24 Vdc)	~2.5W(24 Vdc)
Operating Temperature	-20~70℃
Storage Temperature	-30~80℃
Humidity	10-90%(None Condense)
Weight	~0.28Kg		~0.32Kg	~0.28KG
Certificaiton	EMC(EN61000-6-2/4),UL
Customized Software	WTDUtility