GSM temperature logger supports DS18B20 temperature sensor
System Feature
- Cortex M3 32-bit ARM
- Reliable performance with built-in double watchdog, 24×7
operation
- Dual digital filters for anti-noise
- Network-reconnect and retransmission to ensure data
accurately transmit
- Synchronize clock with multiple way, Sms, NTP, CwtIO Server
- Configurable action schedule(second, minute, day, week,
month)
- Can automatically execute tasks according to preset Events
- Provide configure software, visual programming, over 100
parameters can be set
- Optional inside battery that life is 8-20 hours, cellular
module Intelligent sleep when power lost
DI feature
- Monitor 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
- Remember status when power lost
DO(K) feature
- Relay output(NO, contact load: 2A / 125VAC,220VDC)
- on/off/pulse DO by remote control or local event
- Remain down status when power lost
AI feature
- Accept 4-20mA (option: 0-5V), Sampling frequency: 33Hz,
10-bit precision)
- Convert signal to actual measure value,support adjustment
- Support offset and gain, alarm parameters, upload data
setting
- Sensor disconnect alarm
SMS feature
- Preset 10 phone numbers (support distribute authority to
receive sms)
- Sms alarm when any IO channel triggered or out of preset
normal range
- Editable alarm and recover sms with time stamp
- Remote get device status or value by sending sms command
- On/off/pulse output by sending sms
- Can set interval to report IO channel's status or value by
sms
- Remote update parameters by sms
- Sms remind for sim card overdue
- 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
- Communication protocol: Modbus TCP,http post, Cwt_IO(two-way
communication)
- Can forward data between wireless network with RS485 or RS232
Modbus feature
- polling salve over RS485 with modbus rtu protocol
- Can be a I O module to be read/write by modbus master
- Support Modbus RTU to TCP convert over Ethernet or GPRS/3G
TI feature
- Can set high or lower level to alarm, data log via wireless
network
- Fahrenheit or centigrade units for temperature
- Alarm when probe connection lost
