# 433MHz wireless RF transmitter and receiver kit

**Type:** Product page · **SKU:** SS114992733 · **Brand:** [Seeed Studio](https://core-electronics.com.au/brands/seeed-studio-australia)
**Page:** https://core-electronics.com.au/superheterodyne-wireless-transceiver-module-315mhz-433mhz.html ([markdown](https://core-electronics.com.au/superheterodyne-wireless-transceiver-module-315mhz-433mhz.html.md))

This is a complete wireless transmitting and receiving the kit, which can be applied to simple data wireless transmission, wireless remote control, anti-theft alarm system, etc. The kit is composed of ASK transmitter and receiver modules with superior performance and low cost. The carrier frequency can be 315MHz or 433MHz.

## Pricing

- **Price:** $8.45 (inc GST) — $7.68 AUD, exc GST
- **Quantity discounts:** 10+ $7.37 (exc GST) · 25+ $7.15 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## Restrictions

**For use in Australia**

- Operate only in bands and with settings that are permitted for your location and application. Check this product’s supported frequencies in the description/specs.
- If you intend to operate outside shared/licence‑exempt conditions (e.g. in other bands, at higher power, with high‑gain antennas, or extended duty cycles), you must have the appropriate authorisation.
 
**For use in other regions**

- Follow the spectrum rules for your country/region and select frequencies and settings accordingly.

A declaration of use will need to be submitted during checkout.

## Description

This is a complete wireless transmitting and receiving kit, which can be applied to simple data wireless transmission, wireless remote control, anti-theft alarm system, etc. The kit has a simple structure and flexible application, and can be directly applied to the design and experimental development of various products.

The popular link is like this: MCU -> Encoder -> Transmitter ------ Receiver -> Decoder -> MCU. You can use this kit to build a system with other main control equipment, such as Arduino, Seeeduino XIAO, to implement applications such as wireless security alarms, remote control tools, and so on.

The following is the introduction of the transmitter and receiver respectively.

OOK (on-off keying) is binary switching keying. The modulation principle is to control the passage of the carrier by controlling the opening and closing of the switching device through the binary sequence, so as to load the binary signal onto the carrier. It is a low-cost and most easily implemented modulation method, which is widely used in various occasions.

**Transmitter**

In the wireless transceiver kit, the wireless transmitter module model is APF03, and its working voltage range is 3-12v. It adopts OOK modulation mode, which has the advantages of fast modulation rate and long transmission rate.

**Receiver**

In addition, the model of the decoding wireless receiving module is RXB28, and the working frequency between the transmitter and reciever is 315MHz or 433.92MHz, we are unable to guarantee which frequency is shipped. The recommended power supply input is 5V - the current can be as low as 4.2mA, and the power consumption is very low.

### Features

- Low power consumption: 3.3V about 3.8mA / 5V about 4.2mA(315MHz)
- High receiving sensitivity: -109dBm@10kbps
- Wide temperature range: -40°C ~ 85°C
- Flexible application,breadboard and PCB friendly
- Strong radiation suppression ability:no mutual interference, no influence on receiving distance.
 
### Applications

- Car remote control door switch (RKE)
- Remote access control
- Wireless security alarm
- Remote control curtain machine
- Wireless industrial controller
- Wireless data transmission
- Wireless remote control robot
 
### Specifications 

 | **Parameter** | **Description** |
|---|---|
| Working voltage | Transmitter(3-12V),Receiver(3.3-5V) |
| Working current | Transmitter :max=35mA(12V), min=2mA(3V)  Receiver :max=4.5mA(5.5V), min=3.8mA(3.3V) |
| Principle of work | Superhet(VCO, PLL) |
| Modulation | OOK/ASK |
| Working band | 315MHz OR 433.92MHz |
| Sensitivity | -109dBm (50O) |
| Modulation rate | <10Kbps |
| Decoding form | IC decoding |
| Temperature range | -40°C ~ 85°C |

### Product drawings and pin information

**Transmitter**

**![](https://core-electronics.com.au/media/wysiwyg/product_images/114992733-desc-img-2.jpg)**

The pins are arranged from left to right as follows:

- Pin:Name:Function declaration
- 1:VCC:Positive pole
- 2:GND:Negative pole
- 3:DATA:Signal pin
- 4:ANT:Antenna pin
 
The transmitter module has a small volume and a standard 2.54 spacing for convenient installation.

**Receiver**

**![](https://core-electronics.com.au/media/wysiwyg/product_images/114992733-desc-img-1.jpg)**

The pins are arranged from left to right as follows:

- Pin:Name:Function declaration
- 1:ANT:Antenna pin
- 2:VCC:Positive pole
- 3:DATA:Signal output
- 4:DATA:Signal output
- 5:GND:Negative pole
 
### Technical Details

- Weight: 5g
- Battery: Excluded
 
### Part List 

- Transmitter module x1
- Receiver module x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_2882.jpg)