ET-C22
CC1101 433 MHz Transceiver
Sub-GHz FSK/OOK radio with u.FL antenna, 5 V-safe SPI
AED 29.00
Out of stockOverview
Sub-GHz FSK/OOK radio with u.FL antenna, 5 V-safe SPI
The ET-C22 is built around the TI CC1101 sub-GHz transceiver (433MHz module) — 2-FSK / 4-FSK / GFSK / MSK / OOK / ASK, up to 500kbps, +10dBm. It connects over SPI + 2 GDO interrupt pins (level-shifted for 5V hosts) and is powered from 3.3–5.5V; on-board 3.3V LDO.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- 433 MHz sensor and remote decoding
- Low-power point-to-point links
- RF experiments within local rules
Key features
What makes it different
Radio
TI CC1101 sub-GHz transceiver (433MHz module): 2-FSK / 4-FSK / GFSK / MSK / OOK / ASK, up to 500kbps, +10dBm
Interface
SPI + 2 GDO interrupt pins, level-shifted for 5V hosts
Supply
3.3–5.5V; on-board 3.3V LDO
Antenna
u.FL — use a 433MHz antenna (not included)
Open documentation
Schematic, BOM and layout notes published for every board.
Breadboard friendly
Standard 2.54 mm pitch and M2.5 mounting holes.
Specifications
Technical specifications
| Radio | TI CC1101 sub-GHz transceiver (433MHz module): 2-FSK / 4-FSK / GFSK / MSK / OOK / ASK, up to 500kbps, +10dBm |
|---|---|
| Interface | SPI + 2 GDO interrupt pins, level-shifted for 5V hosts |
| Supply | 3.3–5.5V; on-board 3.3V LDO |
| Antenna | u.FL — use a 433MHz antenna (not included) |
| Size | 35.0 × 25.0 mm |
|---|---|
| Mounting | 4 × M2.5 holes, 2.54 mm from each corner |
| Connectors | 9-pin 2.54 mm header · U.FL receptacle 50Ω — u.FL antenna connector |
| Main IC | VT-CC1101-433 (LCSC C781538) |
| Revision | Rev A |
| Libraries | RadioLib (CC1101), SmartRC-CC1101-Driver-Lib, ESPHome cc1101 (external), rtl_433 for decoding |
|---|
Performance
Radio
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | 3.3–5.5V |
| 2 | 3V3 | Power | LDO output |
| 3 | GND | Ground | Ground |
| 4 | CS | SPI | SPI chip select |
| 5 | SCK | SPI | SPI clock |
| 6 | MOSI | SPI | SPI data in |
| 7 | MISO | SPI | SPI data out |
| 8 | GDO0 | Signal | Config. output (packet / sync / carrier) |
| 9 | GDO2 | Signal | Config. output |
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-C22 CC1101 433 MHz Transceiver (assembled)
- 1 × 9-pin 2.54 mm male header, unsoldered
Getting started
- Wire the header: VIN, 3V3, GND, CS, SCK, MOSI
- Libraries: RadioLib (CC1101), SmartRC-CC1101-Driver-Lib, ESPHome
cc1101(external), rtl_433 for decoding
Compare
Which radio board?
| CC1101 433 MHz Transceiver (this board)This board | ET-C15 LoRa 433 MHz Board | ET-C18 nRF24L01+ Socket Adapter | |
|---|---|---|---|
| What it does | Sub-GHz FSK/OOK radio with u.FL antenna, 5 V-safe SPI | SX1278 LoRa radio with regulated 3.3 V and spring antenna | Stable 3.3 V supply and breadboard pinout for nRF24 modules |
| Interface | SPI + 2 GDO interrupt pins, level-shifted for 5V… | SPI 3.3V (not 5V tolerant — use a level shifter… | SPI on a 1x8 breadboard header (nRF24 inputs are… |
| Best for | 433 MHz sensor and remote decoding | Long-range sensor links | Reliable nRF24 links |
| Price | 29 AED | 59 AED | 9 AED |
Downloads
Documents and design files
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