2 Channel RF Wireless Relay Remote Control Transmitter and Receiver Module 12V

The 2 Channel RF Wireless Relay Remote Control Transmitter and Receiver Module is a complete two-channel wireless switching kit with a 2 channel rf transmitter and receiver module receiver board carrying two independent SPDT relay outputs rated at 10A 250V AC and 10A 30V DC, paired with a matching 315MHz or 433MHz RF remote transmitter. The 2 channel rf wireless remote control module accepts a wide supply voltage range from 5V to 12V DC, covering USB-powered 5V Arduino boards up to standard 12V DC adapter supplies. The 50-meter operating range is a significant improvement over the 4-channel 5-meter variant, making this rf module suitable for room-to-room and within-premises wireless switching builds.

The SPDT relay design provides three connection points per channel — NO (Normally Open), NC (Normally Closed), and COM — allowing each relay to both close a circuit on command and open a different circuit simultaneously if required. This makes the 2 channel rf transmitter useful for two-position switching applications like motorised valve control, reversing switches, and A/B circuit selection, not just simple on/off applications. One practical trade-off: like all RF remote modules, this 2 channel rf relay module operates at a fixed RF code matched to its paired transmitter — it cannot be paired with an arbitrary transmitter and must be used with the supplied remote unless code learning or reprogramming is available on the specific receiver firmware.

The non-obvious advantage of the SPDT output over a simple SPST relay is the NC contact — the NC channel is active when the relay is off, enabling fail-safe circuit designs where the safe state requires a closed circuit. Available from StemVolt, this kit is ideal for engineers building two-circuit wireless switching systems and practical RF home electronics projects.

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Features:

• 2 SPDT relay outputs switch 10A 250VAC and 10A 30VDC loads
• 5V to 12V wide input range suits USB and DC adapter supply
• 50-meter range covers room-to-room switching in standard home layouts
• 315MHz and 433MHz support for standard RF remote transmitter compatibility
• NO NC and COM contacts enable both switching and fail-safe builds

Technical specifications:

 Applications:

• 2 Channel RF Relay Module used for wireless two-room light switch
• College project uses 2 channel rf wireless remote control module for relay demo
• Motorised valve uses 2 channel rf transmitter for two-position open-close control
• Home automation uses 2 channel rf relay module for standalone AC switch
• Workshop uses rf module for 50m remote motor start-stop control build

Package includes:

• 1 x 2-Channel RF Wireless Relay Remote Control