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WebRelay Wireless - 1 Relay, 1 Digital Input, 4 1-Wire Sensors
5 Year Warranty

WebRelay Wireless is an easy to use Wi-Fi enabled relay, temperature/humidity monitor, and status alerting device.


The WebRelay Wireless™ is an easy to use Wi-Fi enabled relay, temperature/humidity monitor and status alerting device.

The WebRelay Wireless has a built-in relay for controlling lights, motors and other relatively high current loads, a digital input which can be used to monitor and report the status of switch-closure sensors and a “1-Wire” port for connecting up to four digital temperature/humidity 1-Wire sensors.

Built-In Web Server

The WebRelay Wireless works well as a stand-alone device that can be controlled and monitored using a standard web browser. It can be set up and configured using simple menus and drop-down lists.

Wireless Access Point

The WebRelay Wireless can be a self-contained wireless access point that requires no additional servers or ControlByWeb devices. In this mode the WebRelay Wireless provides live, real-time temperatures or input status directly to a user through web browsers or the CBW Mobile app (optional).

Setup is simple. There is no app to download, no subscription to buy, no software required, and no programming necessary for setup or use.


Record data such as sensor data and changes in I/O state. Both periodic and event-based logging are supported.

Email/Text Notifications

Record data such as sensor data and changes in I/O state. Both periodic and event-based logging are supported.

Peer-to-Peer (P2P) Communication

The WebRelay Wireless has the ability to remotely control relays located on other ControlByWeb devices.

Built-in Inputs and Outputs

1 Relay

12A | 277VAC, 30VDC

Control: lights, motors, locks, etc.

1 Digital Input

Optically-Isolated | 4-26 VDC

Monitor on/off state of switches, alarm sensors, and much more.

Up to 4 Temperature/Humidity Sensors

1-Wire Bus

Monitor up to four, 1-Wire sensors such as: Temperature and humidity. (Sensors not included)


  • Built-in high current relay
  • Optically-isolated digital input
  • Up to 4 temperature sensors
  • Wireless Wi-Fi 802.11 b/g/n
  • Antenna included
  • Transmission range up to 250ft
  • Logging of the input, counter, temperature, humidity, relay state, and Vin
  • BASIC script support for advanced flexibility
  • Customizable web-based Control Page
  • Send email alerts (up to 8 email addresses) based on user-defined conditions
  • Supports encrypted email servers, such as Gmail
  • Static or DHCP IP address configuration
  • Real-Time clock with NTP server synchronization
  • Automatic daylight savings and leap year adjustment
  • No software required
  • XML, Modbus/TCP and Remote Services
  • Field updatable
  • Removable terminal connectors for easy installation
  • Rugged DIN-Rail/wall-mountable enclosure
  • 5-Year Warranty
RoHS compliant Made in the USA
CE listed “UL”


The WebRelay Wireless is ideal for applications where electrical devices must be controlled or where temperature or switch-closure sensors must be monitored, and where Ethernet wiring is not accessible or practical to install. WebRelay Wireless is powered by an external wall transformer (9-28 VDC), solar panel, or other DC power source.


Gate Controller

WebRelay Wireless Monitoring and controlling a security gate.

WebRelay Wireless controls a gate motor and sensor.

Refrigeration Monitoring

WebRelay Wireless monitoring and freezer door and temperatures.

WebRelay Wireless monitoring 4 temperature sensors, and freezer door sensor.

Note: Illustrations do not represent actual wiring.

WebRelay Wireless Part Numbers


(Antenna included)

Relays: 1 (12A 277VAC, 30VDC) Digital: 1 (4-26 VDC)
Temp: 4 (-67°F to 257°F (-55°C to +125°C))
Peer-to-peer, Basic scipts, email/text alerts 9-28 VDC

More Information:


Where to Buy

Click "Buy Online" to view part numbers and pricing. WebRelay Wireless is available in the USA and internationally, and can be purchased either from us or an Authorized Distributor.

Warning: May contain chemicals, including Nickel (metallic), known to the State of California to cause cancer and reproductive harm. -



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