RF Controller Kit 315MHz w/ Remote - 4-Button Wireless Set 3.3v there are five significant distinctions

there are five significant distinctions between them

7–20V (AC or DC) Frequently Asked Questions

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1 × Humidity Sensor Module HR202

RF Controller Kit 315MHz w/ Remote - 4-Button Wireless Set 3.3v there are five significant distinctionsRF Controller Kit with Remote Control 315MHz Clickety click, control your LEDs from a distance! A four buttoned RF controller that can work without an additional microcontroller.  Armed with SC2273 L4 SC2272 M4 IC for encoding and decoding signals. The receiver is powered using a 5VDC supply. By pressing button A, it activates the first pin to output HIGH. When B is press, it enables the second pin. And so forth will all other buttons. Frequently