802.15.4 ModulesContact Closure Module

The sender board and each receiver board is equipped with a Wireless 802.15.4 Module.  The wireless module adds wireless communications to the board using an 802.15.4 wireless protocol and will only communicate with it's paired modules.  The module is powered from the board and the board itself will require 12 volts of power and can be hard wired or you can purchase a "wall wart" type Power Supply at checkout.  Click the following link for a spec sheet on the XBee Multipoint RF Modules.

Wireless Range

The wireless range or distance the boards will be able to effectively communicate with each other has a "Standard Range"of 1Mile (1.6km).  This includes a small external antenna that can be positioned or placed outside of an enclosure.  Hills, Trees, and Buildings will greatly reduce communication range of all wireless devices, so practical distances may be less.

Line-Of-Site Operation

As with any wireless technologies, for optimal performance it needs to be line-of-sight.  In other words the antennas of the board and modem must "see" each other to get the optimal range or even be able to communicate at all.

Whos Qualified to Use the MirW Series?

Anyone.  The MirW Series Controllers are very consumer-friendly devices that are married together through software and only require some wiring by the end user.  Whether an electronics engineer or a home hobbyist, almost anyone is qualified to use the MirM Series controllers.  A Quick Start Guide is will be available soon in the resources section to the right or bottom of this page.

Contact Closure Inputs

A MirW controller has multiple contact closure input boards that has enough inputs to control each relay at the single location.  The inputs can be wired to trigger any of the relays on the receiver board.  The inputs are contact closure inputs only - no voltage can be applied to these inputs.  Buttons, switches, other relays or other electronic devices can be used as an input and trigger the remote relays as long as no voltage is applied.

Relay Outputs

MirW Controllers have relays integrated into the receiver board that all the reomote locations will control.  A relay is similar to a switch, the only difference between a switch and a relay is the actual mechanism for changing the on/off status of the switch.  On a switch, you manually push on a piece of metal or plastic to operate the switch.  On a relay, an electric current is used to operate the switch.  Relays do NOT provide a voltage output, they provide a contact closure output and simply interrupt the power to the device you are switching.  Wiring to a relay will be slightly different depending on the model of MirM controller you choose.  A relay can be used as a contact closure input.  If your job requires a single contact closure input to trigger other multiple contact closure inputs this will do the job well.