The NodeXS3 is a robust industrial automation node with protected inputs and outputs. It can be configured for numerous applications where a small number of analogue or digital inputs are required, and where the unit is positioned remotely. The four analogue inputs may be used to measure varying inputs with 12-bit accuracy. The six digital inputs are optically isolated and can detect pulses ranging from 5VDC to 220VAC. It also includes a low power counter on digital input one to count pulses for storage and periodic uploads. Primary communication is provided by a Lora Communication module which also includes SIGFOX, WIFI and BLE communication. The unit can be powered from high DC voltages (42VDC) and has an advanced battery charger with power point tracking. In addition it can power external sensors up to 14VDC to take measurements. It also includes three relays rated at 30VDC/220VAC/16A to control external devices.


  • Water reservoir level monitoring (4x reservoirs)
  • Water flow counter (1x low power counter, 5x normal)
  • Process output counter
  • Security (dry contact/movement)
  • Alarm trigger (dry contact/siren/warning light)
Mechanical Details
Housing IP66 Polycarbonate Weatherproof Enclosure
Hardware Connections Input Power – 1x 2-Way Screw Terminal, Sensor Power – 1x 2-Way Screw Terminal, Battery – 1x 3-Way Screw Terminal, Relay – 3x 3-Way Screw Terminal, Digital Input 1 to 6 – 2x 6-Way Screw Terminal, Analogue In & I2C Expansion Bus – 1x 6-Way Screw Terminal
Operating Temperature Range -40C to +85C
Dimensions 180 x 130 x 77 mm (L x W x H)
Input Range 6 – 30 VDC
Output Range (Sensor Power) 2.65 – 14 VDC / 3A
Backup Battery LiPo Charger – Max 5A Charge current with eFuse Protection (UVP, OVP, OC), 2600mAh
Connectivity LORA, SIGFOX, WIFI (802.11b/g/n), Bluetooth (4.2/Low Energy/Classic)
Antenna External ½ Wave Whip
Expansion Bus I2C, UART – Expansion bus used to add additional features or devices (External)
Inputs 6x Digital Optically Isolated Inputs, (5V DC – 220V AC) – For example to measure high low transitions, open/close positions or similar inputs.
Counter Input 1x Low Power Counter (shared with Digital Input 1, 15uA current consumption)
Outputs 3x Relay Outputs, (30VDC/220VAC) -For example to trigger outputs or to turn signals on/off
Analogue Inputs 4x Analogue Inputs with protection
Interface/Program Port UART Header
Other Details
Processor ESP32 Dual Core MCU & Hardware Floating Point Acceleration
Internal Memory 8MB Flash Memory, 520KB + 4MB RAM
Encryption SHA/MD5/DES/AES
Additional Features
Industrial ESD protection on all connector pins
LED Indicators on all inputs and outputs
RGB LED on processor
LEDs on all Digital Inputs and Relay Outputs
Various other LEDs to show status