FS1000A 433MHz RF Transmitter and Receiver Module Pair

For projects needing basic one-way wireless communication without the complexity or cost of a full transceiver protocol stack, the FS1000A pair offers about the simplest possible entry point: a dedicated 433MHz transmitter and a matching receiver, communicating via straightforward OOK (on-off keying) amplitude modulation rather than anything requiring protocol negotiation, pairing, or configuration.

Transmission distance is rated beyond 500 meters under good conditions (receiver sensitivity down to -103dBm), with the transmitter drawing a modest 20-28mA while active and essentially zero current at standby, and outputting 16dBm (40mW) of RF power. Both modules are genuinely tiny - the transmitter at just 19x19x8mm and the receiver at 30x14x9mm - fitting easily into even compact project enclosures without dominating the available space.

Wiring couldn't be simpler: each module exposes just power, ground, and a single data pin, with the transmitter's data pin driven high to transmit and the receiver's data pin reflecting whatever signal is currently being received. A deep sleep mode activates automatically on the transmitter side whenever the data pin is grounded, helping conserve power in battery-operated applications that only need to transmit occasionally rather than continuously.

Builders working on a simple wireless remote control, a basic one-way sensor data link, a DIY garage-door or gate trigger, or any project needing uncomplicated wireless on/off signaling without a full radio protocol stack will find the FS1000A pair a well-proven, extremely widely-used starting point for exactly that kind of simple RF link.