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Thermostat and Tank Level Monitor System

The BAYweb Thermostat and Tank Level Monitor System enables you to monitor and control your thermostat AND monitor fuel tank levels, temperature, motion sensors and more, from anywhere through your PC, smart phone or tablet device.

This energy-saving Internet Thermostat features a secure home monitoring system that alerts you in case of heating/cooling issues as well fuel levels, sump pump failure and even break-ins


  • Alerts you by email and mobile phone.
  • Set up alerts for high or low fuel levels and temps, as well as the ability to add additional environmental sensors
  • Comprehensive energy management reporting, analysis, and alerting functions as well as setting energy threshold alerts
  • Can be used with 2-heat/2-cool and/or heat pump systems
  •  Supports unlimited X 10 wireless motion sensors, and three wired alert inputs
  • Allows for indoor temp, outdoor temp, motion sensors and more (only Bayweb sensors supported by manufacturer)
  • No Recurring Costs
  • Use Existing Wiring
  • Plug and Go Networking
  • Keypad lockout feature for web only operation
  • Reports in Fahrenheit or Celsius
  • Clock - Synchronized with NIST Atomic Clock (+/- 1 second)
  • Accuracy - 1° F
  • Power Requirements - 24 VAC 0.5 Amp maximum, or 120 VAC, 60 Hz, 0.25 Amp maximum
  • Module - 7.5"W x 5.65"H x 1.2"D
  • Thermostat - 4"W x 5"H x 5/8"D
  • Saves money and energy


BAYweb Internet Thermostat - Sample Installation

Click here to see the

BAYweb User Manual

Thermostat Keypad Functions


The BAYweb Thermostat and Tank Level Monitor System


Complete system for controlling your thermostat and monitoring fuel levels and temperature via the web



BAYweb controller and display unit



Along with analysis and reporting, you can set up your thermostat to alert you if the energy usage ever exceeds a specified threshold; a great feature for building managers, landlords, and vacation home owners.


SIMPLE INSTALLATION- Install by yourself and connect to the Internet in less than 30 minutes. No networking expertise needed.


DUAL POWER OPTION The thermostat can be powered from the furnace/AC if equipped with a “C” wire, or from a standard outlet. No batteries required.

The BAYweb Professional model also supports the ability to add these specialized, optional features:

  • Identify an open door or window and shutdown the system.
  • Outside temperature sensor (requires a BW-TEMP OUTDOOR)
  • Allows for up to four indoor air temperature sources.
  • Average temperature control for up to four areas (requires temperature sensors).
  • Temperature monitoring and alerting for up to four inputs (requires temperature sensors).
  • Scheduled and remote relay control for up to two Relays
  • Motion sensors

screen shot

Screen shot showing tank level at 50%


BAYweb Thermostat and Tank Level Monitor System - FOR 42-44" VERTICAL TANKS.....#BAY42...$449

BAYweb Thermostat and Tank Level Monitor System - FOR 26-27" HORIZONTAL TANKS.....#BAY27...$449



BAYweb Internet Controlled Switch


switch rela info

BAYweb Internet Controlled Switch Brochure

User Manual 

BAYweb Wireless Motion/Occupancy Sensor - Gray


motion sensor motion sensor


BAYweb Indoor Temperature Sensor


indoor temp sensor text

BAYweb Outdoor Temperature Sensor


outdoor temp outdoor temp text

Wired Door Contact


door contact


  • Simple to install
  • Angled terminal blocks for easy installation
  • Low-profile design
  • 1" gap distance
  • Larger terminal screws - no mini screwdrivers
Technical Specifications
  • Color : Eggshell White
  • Contact Configuration : N.O.
  • Depth[Nominal] : 0.34 in
  • Enclosure Material : ABS Plastic
  • Gap Distance[Nominal] : 1.0 in
  • Length[Nominal] : 2.0 in
  • Loop Configuration : Closed Loop
  • Mounting Option - Magnetic Contacts : Surface
  • Operating Temperature[Minimum] : -40.0 F
  • Operating Temperature[Maximum] : 150.0 F
  • Operating Voltage[Maximum] : 30.0 V
  • Power (Watts)[Maximum] : 7.5 VA
  • UL Rating : C-UL-US
  • Width[Nominal] : 0.4 in