wireless temperature and humidity data logger system

System Feature

• Cortex M3 32-bit ARM
• Double watchdog to ensure stability
• Support signal fileter
• Stable reconnection strategy for data transmit
• Update RTC automatically or manually, clock source support Sms, NTP, CwtIO Server
• Configurable action schedule(second, minute, day, week, month)
• Event-based linkage programming, e.g. alarm linkage output
• Easy used GUI configure software for setting up to 100 parameters
• Optional exterior rechargable battery for 8-20 hours working when power lost

DI feature

• Accept NO or NC dry contact

DO(T) feature

• Transistor output(drive voltage=power supply voltage, Drive current≤500mA)
• Remote or local event activate DO on/off/pulse
• Status memory function for power lost

DO(K) feature

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

AI feature

• Standard 4-20mA (option: 0-5V) signal in, Sampling frequency: 33Hz, 10-bit precision)
• Transduce 4-20mA(0-5V) to actual value
• Can set parameters for value processing, alarm, data transmission
• Detect connect or disconnect to alarm

SMS feature

• Support 10 cell phone numbers for alarm and control
• Any device alarm status can be sent by sending sms
• All alarm and recover sms text can be edited
• Remote get device status or value by sending sms command
• Control output via sms command
• Sms report any IO channel’s status or value on schedule
• Remote update parameters by sms
• Forward simcard overdue sms to admin
• Power lost and recover alarm by sending sms

Wireless network communication

• Option network: cellular(2g/3g/4g) or Wi-Fi
• TCP/IP connect at most 4 servers(support Static IP address or domain)
• Support post or respond mode for data communication
• Support http post, Modbus TCP, CWT protocol over cellular or Wi-Fi
• Can forward data between wireless network with RS485 or RS232

Modbus feature

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

TI feature

• Option temperature probe or temperature&humidity probe, support alarm, interlock, data communication
• Can switch ℃ or οF
• Alarm when probe connection lost