The Internet Of Things (IoT) is where everyday things (cars, homes, household appliances, plants) are being connected to the Internet where we can monitor and alert in ways not possible before. This document describes our WiFi Sensor and its place in the IoT Universe.

S32 WiFI Gateway Pro

The JemRF WiFi Gateway Pro is based on the ESP32 processor, which makes it more than just upgraded Version; it is the start of our next-generation of sensors. The WiFi Gateway Pro expands the versatile device features of the older device with a larger collection of sensor options, ready to go with simple plug-and-play, for quickly and inexpensively updating the cloud.
It comes in different configurations,

  1. WiFi Gateway Pro which has an optional internal Temperature and Humidity Sensor. 2. WiFi Sensor Case

  2. WiFi Gateway Pro with Relay. It contains dual internal relay for control signalling.
    Using and of the sensors being monitored by the Gateway, you can select a sensor to control the on/off state of the control a relay. There are two independent relays allowing you to select two different sensors, one for each relay. Then set the on and off values that control the relay action.

WiFi Gateway Pro with Relay Case

The JemrRF WiFi Gateway Pro connects to your WiFI access point so you can send temperature readings to monitor.jemrf.com, or another monitoring application. Additionally, MQTT support is available for forwarding readings to an MQTT broker. It is fully assembled and requires no soldering. Connect it to power, and it will advertise itself as a wireless access point. Configure it through a web browser using its easy-to-use config application. Once configured, it will connect to your WiFI network, which will give it access to the internet and the JemRF Monitoring server, your own server, or run on a local network with custom software.
The WiFi Gateway Pro intelligence monitors network connectivity, retrieves time from Internet Servers, and disables the onboard AP after 10 minutes of connection to the local WiFi to secure open access. If not connected to the Internet, the start time is set to October 1, 2025.
The sensor provides options to customize for your business and to authenticate changes.

The Gateway Pro series are Home Assistant MQTT Auto Discovery compliant, making adding to Home Assistant a simple selection without any coding.

Features:

  • Easy to configure web interface. No programming or soldering skills required. You do not need the internet to configure the device. Connect to it directly from any Wi-Fi device (e.g., PC, phone, tablet).
  • Uses your local 2.4 GHz WiFi to access the Internet
  • Cyclic temperature transmission mode with configurable send interval
  • Supports both Celsius and Fahrenheit temperature readings
  • Supports HTU21D Temperature (-40℃ – 105℃) and Humidity - Sensor.
  • Supports physical contact closures with Relay option.
  • The device supports dual Wi-Fi mode, allowing it to act as both a Wi-Fi access point and a Wi-Fi client at the same time. A WiFI access point advertises itself through an SSID and can be connected to via any device or computer that has WiFI.
  • MQTT Setup page for connection to the MQTT Broker to relay temperature and humidity readings.
  • The WiFi Sensor supports 3 MQTT formats; more details are available in (WiFi Pro Devices MQTT Settings)[https://documents.jemrf.com/wifi32s-mqtt.html]. The MQTT connection can be upgraded from a standard non-secure to a secure, trusted connection.
  • MQTT Home Assistant Auto-Discovery supported.
  • Access Control Option to provide Authorization to save Changes and read hidden settings.
  • JST PH2.0 plug option for external 5 volt DC external power, or to provide power to external devices.

Required, but not included:

USB-C cable and USB power supply. We have USB-C cables at our store, (JemRF Store)[https://www.jemrf.com].

Installation and Projects

Tech Specs:

  • Dimensions 74mm x 55mm x 28mm
  • Powered either by a USB-C cable 5VDC.
  • Temperature range: -55°C to +125°C. Fahrenheit equivalent is -67°F to +257°F, ±0.5°C accuracy from -10°C to +85°C