Heating Interface (HI)

This unit is perfect for a programmer who wants to interface a heating system to a central server.  The controller can be mounted away from the server and can be controlled by server commands sent via a standard http:// URL (see [HI Set-Up and Installation] for examples).

This is the perfect interface for anyone wanting to control up to four switches vai a server connected to the same subnet.  

Despite the name, it can control anything.  The relays are all SPDT so can be used to switch between circuits or turn any item on/off.  This could include lights, cooling systems, heating systems, ventilation systems or anything else that's controlled by a switch.

Although the HI doesn't have any feature for timing, it can be set to maintain a temperature by specifying a switching temperature individually for each of the four relays (when set to auto-switch the manual commands to change a relays state are ignored).

Features

• Server can control each relay individually
• Server can read the state of the relays
• Server can read the temperature
• Server can set an automatic temperature for each relay, then if the temperature falls below that specified the relay will turn on
• User configurable IP address (default = 192.168.0.77)
• User configurable port (default = 80)

Specifications

• 1 x temperature sensor on 1M cable
• 4 x 10A relays

Requirements

• 7.5V to 12V DC power supply
• Connection to LAN via CAT5 cable
• Programming skills in your prefered language (any language that can read from a URL)

What's in the package

• 1 x Heating Controller Interface, premounted in plastic case - no other holes in the case so you can have cable entry where ever best suites your needs
• Instructions - this will be basic instructions detailing the format of the URL and how to read the temperates/status of relays, there will also be a link to downloadable PHP code