Keyfob 4-Button RF Remote Control - 315MHz SF_Serial Many "cheap" DS3231 RTC boards

Many "cheap" DS3231 RTC boards do not use genuine Maxim DS3231's - you'll get a non-calibrated RTC which does not maintain the timekeeping quality that is specified

you can quickly get your wireless project prototyped by using your iOS or Android phone/tablet as a controller

There's an I2C-controlled PWM driver with a built-in clock

you can take it on the go

Sensor Calibration Procedure

Keyfob 4-Button RF Remote Control - 315MHz SF_Serial Many "cheap" DS3231 RTC boardsThis 4 button keyfob remote goes with our three basic 315MHz RF receiver modules . It will work with all of them, sending out one of four commands that match up with the four outputs. Its small and light weight and will work up to 25 feet away depending on line of sight and obstructions. Since this is just a transmitter, if you have multiple receivers, it will turn all of them on and off at the same time (there is no sub addressing) For hobby