remote terminal unit manufacturers, gsm remote control switch

System Feature

• Adopted highly integrated industrial 32-bit ARM MCU
• 24×7 working, soft and hardware Double watchdog
• Dual digital filters for anti-noise
• Support automatic network reconnection and data re-send
• Automatically or manually update interior clock by sms or NTP or server
• Configurable action schedule(second, minute, day, week, month)
• Support Interlock programming, Event trigger
• Easy used GUI configure software for setting up to 100 parameters
• Optional inside lithium battery for power lost alarm and keep 8-20 hours working

DI feature

• Trigger dry contact(NO or NC)

DO(T) feature

• Open-collector output(drive voltage=power supply voltage, Drive current≤500mA)
• DO can be activated by remote or local schedule
• Remain down status when power lost

DO(K) feature

• Relay NO contact output(load: 2A / 125VAC,220VDC)
• DO can be activated by remote or local schedule
• Remain down status when power lost

AI feature

• 4-20mA (option: 0-5V) in, Sampling frequency: 33Hz, 10-bit precision)
• Transduce 4-20mA(0-5V) to actual value
• Configurable parameters for signal acquisition, alarm, data communication
• Signal lost alarm

SMS feature

• Preset 10 phone numbers (support distribute authority to receive sms)
• Any device alarm status can be sent by sending sms
• Editable alarm and recover sms with time stamp
• Can send sms command to request any channel status or value
• Activate output by sending sms
• Can set interval to report IO channel's status or value by sms
• Remote update parameters by sms
• Can query SIM card balance, sms forward
• Support power lost sms alarm and recover sms(works with inside battery)

Wireless network communication

• With 2g, 3g, 4g, Wi-Fi version
• TCP/IP connect at most 4 servers(support Static IP address or domain)
• Support post or respond mode for data communication
• Communicate with server by optional Cwt_IO, Modbus TCP, http post protocol
• Support two-way data transparent transmission with RS485 or RS232

Modbus feature

• Can work as a modbus master to poll salve over RS485
• As a RS485 I O module to be polled by modbus master
• Run Modbus RTU or TCP protocol over GPRS/3G