Overlay, retrofit to manual wall switch; unreliable for Smart control; OK, with tweaking, as wall timer.
This is a retrofit solution to making a manual wall switch "smart"; it, however, fails in design both of its interface and physical clearances It fails in implementation due to a) use of short-range Bluetooth (vs WiFi, Zigbee, Z-wave), b) frequently "dropped" Bluetooth connection and c) dimensioning that hampers reliable actuation of the manual switch. It is powered by 2 AAA batteries that should last a few months.
However, if you can get it discounted, it is a workable solution to covert a manual switch to a 24 hours time switch.
1. After repeated attempts to connect, and even more to update the firmware, you can program a night-time schedule on a daily, weekly or other basis; the programming resides in the unit and does not need Bluetooth connection to the app.
2. For the rocker switch, the clearance has to be to the nearest mm for effective actuation of the rocker switch. By trial and error, I taped a 2 mm thick spacer on the rocker so that the unit would be in sufficient contact with manual switch surface.
3. While the unit sticks to the wall switches' two plate screws, some cases, especially if the rocker is stiff, may mean changing to a softer rocker and/or gluing or taping the unit to the wall place to prevent separation.
With newer complete WiFi smart wall switches now approaching $15-25 each, this Switchmate is really only viable if it is priced at $10; it is unreliable as a smartswitch but OK as a retrofit timer switch - with a lot of tweakiing.
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