This sender breakout board enables you to send data on the designated frequency. It typically comes as a kit together with the ASK receiver board MX-RM-5V.
Make sure you purchase the version for the frequency you intend to use. You cannot change the frequency later. In Europe, use the 433MHz version. The 315MHz version is intended for the US market. In Europe, 315MHz is reserved for military services, and you can get in serious trouble when you operate on this frequency.
Specs
This breakout board by default emits 40mW and in this configuration is illegal to use in Europe. The maximum legal emission power in Europe is 10mW.
| Item | Value |
|---|---|
| Voltage | 3-12V |
| Frequency | 433MHz or 315MHz |
| Standby Current | 0mA |
| Working Current | 28mA |
| Output Power | 16dBm / 40mW |
| Modulation Mode | AM (OOK) |
| Transmission Rate | <10 Kbps |
| Size | 19x19x8mm |
Pins
The board comes with three pins plus a solder pad tp connect an antenna.
Always operate these devices with an antenna. If no designated antenna is at hand, use a plain 17.3cm wire for 433MHz, and a 23.8cm wire for 315MHz.
| Pin | Tag | Description |
|---|---|---|
| 1 | VCC | +3-12V |
| 2 | DATA | Information to send |
| 3 | GND | negative pole |
This board comes in multiple versions, and the pin sequence may be different. Always look at the printed pin labels. Do not rely on a specific pin order.
The RF frequency of the board on is printed on the round silver component. The picture shows the 433MHz variant.
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(content created Apr 01, 2024)