A DIY OPTION.
FOR THOSE WHO want to get hands on building their own smart home devices, the WeMo Maker is fantastic. The little unit connects to Wi-Fi, and can be used to monitor an input, and trigger an output. It also ties in with services such as IFTTT, which gives almost limitless customisation options. The Maker accepts a 5V digital input, which is also used by a range of sensors. For example, you could monitor temperatures, a motion sensor, water level switch or mow. The output relay handles up 24V at 1A, so can directly turn low-power DC devices (such as LED light strips) on or off. It can also be used to trigger a larger relay, for controlling tech not possible with a 240V smart plug. The Maker is controlled through the excellent WeMo app, and links into your existing Wi-Fi with a long-range antenna. The Maker was launched a few years ago now and can be hard to find, but is available (when in stock) directly from Belkin for $70.