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Description
RFM22B-S2 RF Transceiver Breakout Board 434MHzsku: WRL 10154 Here is the breakout board for the RFM22B which gives you access to the pins. The RFM22B is a low cost ISM (industrial, scientific, and medical) FSK (frequency shift keying) transceiver module which offers communication at 434MHz and adjustable output power of up to +17 dBm. The wide operating voltage range of 1. 83. 6 V and low current consumption makes the RFM22 an ideal solution for battery powered applications. Communication with
sku: WRL-10154
Here is the breakout board for the RFM22B which gives you access to the pins. The RFM22B is a low-cost ISM (industrial, scientific, and medical) FSK (frequency-shift keying) 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 RFM22B 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.
In our testing, a 17cm wire attached to the 'ANT' pin worked just fine. A hole is drilled next to the 'ANT' pin for strain relief.
Features
- 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)
Dimensions: 0.63x0.63in (16x16mm)
Documents
- Schematic
- Eagle Files
- Example Code (ATmega328)
- Datasheet (RFM22B)
- Product Page
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4.0 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Missing the key.
Size: 1 Pack, Style: Cabinet
Great product. The key is located in a strange place though.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2022
★★★★★ 5
Just What I Needed
Size: 1 Pack, Style: Cabinet, Size: 1 Pack, Style: Cabinet
Fits my mailbox style sharps containers perfectly. This was easy to mount on the wall. However, it doesn't come with screws. Not a big deal for me, since I have extras from various projects, but it's a wall mounted sharps container holder so I feel like it should have come with screws. Doesn't change my star rating cause it's just what I needed. Would buy again if I needed to.
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Reviewed in the United States on October 4, 2024
★★★★★ 5
Good quality
Size: 5 Pack, Style: Cabinet
Good quality sharp box with keys. Highly recommend
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Reviewed in the United States on June 1, 2025
★★★★★ 5
Everything was in tack
Size: 1 Pack, Style: Cabinet
I love it the key was inside and my dispenser fits perfectly
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Reviewed in the United States on October 2, 2025
★★★★★ 4
Works fine
Size: 1 Pack, Style: Cabinet, Size: 1 Pack, Style: Cabinet
I've seen some complains about the keys, just check the back of the lid.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2024
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