Replacement:WRL-10153. This has been replaced with the RFM22B. We will no longer be carrying this product and this page is for reference only.

The RFM22 is a low-cost ISM FSK transceiver module which offers communication at 434MHz and adjustable output power of up to +17 dBm. The wide operating voltage range of 1.8–3.6 V and low current consumption makes the RFM22 an ideal solution for battery powered applications.

Communication with the RFM22 is achieved via a standard 4-wire SPI interface. Three configurable general purpose I/Os are also available, the use of which can be tailored towards the needs of your project. A host of other features are also available including an 8-bit ADC, temperature sensor, RX and TX FIFOs, and low-battery detection. See the datasheet below for a complete description of every register and command.

The module comes in a 16-pin, 16 x 16mm, SMD package, with pins spaced by 2mm. Look for a breakout board coming soon!

Note: We found these in inventory and they work fine but we're no longer stocking them. We'll be selling them at a discount for a limited time but when they're gone, they're gone!

• Frequency Range = 434 MHz
• Sensitivity = -118 dBm
• +17 dBm Max Output Power (Configurable)
• Low Power Consumption
• Data Rate = 1 to 128 kbps
• Power Supply = 1.8 to 3.6 V
• Ultra low power shutdown mode
• Digital RSSI
• Wake-on-radio
• Auto-frequency calibration (AFC)
• Configurable packet structure
• Preamble detector
• TX and RX 64 byte FIFOs
• Low battery detector
• Temperature sensor and 8-bit ADC
• -40 to +85 °C temperature range
• Integrated voltage regulators
• Frequency hopping capability
• FSK, GFSK, and OOK modulation
• Low BOM
• Power-on-reset (POR)
• 16 x 16mm (0.63 x 0.63 in)

• Datasheet
• Hope RF's RFM22 Product Page
• Example Code (ATmega328)