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SynField Peripheral Node

In the case of a mulit-node network on the field, SynField PN is designed for supporting installation of  sensors and actuators at locations other than that of SynField HN. SynField PN does not communicate with Cloud and therefore SynField HN is required for its operation. SynField PN transmits data to the central node (SynField HN), which further transmits them to Cloud.

HN has 5 connectors for sensors or actuators (electric valves, start / stop pumps or relay pumps). It communicates with SynField HN via RF (IQRF) at 868MHz. It is fully weatherproofed for outdoor use and it has a ESD/lightning protection. Finally, it is energy-independent because it has a built-in solar panel and a rechargeable battery.

Technical Specifications

Sensor input ports	8 (analog, digital, or pulse sensors)
Actuator ports	6 (solenoid valve with latching solenoid, 1 or 2-coil latching relay)
Logging/Reporting interval	5 min to 12 h
Data storage	8 GB (5-years+ records depending on configuration)
Memory type	Nonvolatile flash, full data retention with loss of power
Global position	Integrated GPS receiver
GPS position accuracy	±3 m, with good sky view
Timekeeping	Synchronize automatically with SynField server
Battery capacity	4000mAH Lithium Polymer battery

Battery charging	Solar energy harvesting or external charger
Cellular specifications	Quad-Band GSM/GPRS cellular module
Cellular coverage	150+ countries, with 200+ networks
Internet downloads	SSL/TLS encrypted
Enclosure	Weather-, impact-, and UV-resistant polymer
Enclosure rating	IP56, NEMA 4
Enclosure size	13.5 cm × 19.5 cm × 7.0 cm
Enclosure access	Hinged door with latches and eyelets for lock or zip tie
Operating environment	–40 to +60 °C (0%–100% relative humidity)