SineDroid - Power Supply Alert

App4Buck SineDroid is an application that can be used to check power status of many appliances. The app detects changes in the external power of the Android phone (could be the 12V car charger, or a mains supply) as well as the phone battery voltage and decides to warn the user by SMS text message.
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Here is an example list of what you can safeguard with SineDroid:
√ Freezers and refrigerators power drop
√ Power Generator failures, power drops
√ Remote doorbell (just briefly interrupt the charging power through a push button)
√ "Power slave": detect whether a device switched on (a pump, a lamp, etc.) by using a master/slave power strip
√ Overload and blown fuse detection
√ Boat and vehicle power watch, 12V battery status
√ Solar systems battery watch, battery status
√ Server or PC crash/reboot (USB power drops)
√ Surveillance lights with movement detection (hook the phone charging power to the lamp)
√ Boat leaking detection (using a float that switches the phone charging power on or off)
√ Phone theft (when it’s connected to the charger)
√ Any other power drop or power recovery that feeds your Android phone
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In SineDroid, up to three different events are watched: power lost, power restored, and low phone battery level reached. All you need to do, is go to the settings page and fill in on which event you want to be alerted and your mobile phone number. That’s it. The app will warn you as soon the event happens!

Each of these are individually programmable and can have a descriptive name. You can define whether you want just a sound alert, a warning text message, or both.

The main screen shows the name of the scheme and location and the conditions that are watched. A big on/off switch helps you switching off the feature and the quit button will end the application.

The name SineDroid was chosen to be unique and reflects the sine wave that typically is the wave shape of the mains voltage.
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Feature set
√ detects external power loss
√ detects external power recovery
√ detects low phone batters
√ sends SMS text message with user defines warning text on any of the aforementioned events
√ audible signal on any of the aforementioned events
on screen warning on any of the aforementioned events
√ also works in the background or when in suspend mode (sleep)
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Related hardware and applications

A typical setup is a cheap Android phone connected to a charger, plus your normal or business mobile phone. Maybe there is no need for you to purchase any additional hardware, but we could think of some useful inexpensive gear...

√ Master/Slave mains power socket: when one socket detects something being powered, the other sockets come alive too. So, if some device is connected to the master socket and it stops operating, the slave socket, where the phone is plugged into, loses power and will trigger SineDroid.
√ Inverted Master/Slave mains power socket: let’s say you attached a pump triggered by a float in your boat. As soon the pump is started by the float, the master socket switches off the slave socket, causing the phone to lose external power. This is detected by SineDroid.
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We kindly ask Android permission for:
√ SMS messages (we only send messages to the addressee filled in by you, if configured)
√ internet: the help pages are streamed from www.app4buck.com. No other content is downloaded or uploaded.
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Known issues
√ V1.0 In some docks, after docking, the power events are not detected anymore. If you experience this, simple leave the app and restart the app.
√ V1.0 Freezes after aboutbox, also freezes after double alert
√ V1.2 None._____________________
Keywords: power, power cut, power alert, power guard, mains alert, trigger, generator, aggregaat, netspanning