Quasar QFM-TX1-433 RF Transmitter Module 433 MHz, 2.2 → 3.5V

  • RS stock no. 385-487
  • Mfr. Part No. QFM-TX1-433
  • Manufacturer Quasar
Technical data sheets
Legislation and Compliance
Product Details

QFM series 433MHz FSK Transmitter/Receiver Modules

A range of basic radio telemetry transmitter and receiver modules operating in the 433MHz ISM frequency band. Digital data can be communicated directly from a microcontroller serial port, or via a suitable codec.

RF Carrier frequency: 433.92MHz ISM band
RF Output Power: +10dBm
Modulation: FSK
OTA Data rate: 200 to 4800bps
Receiver Sensitivity: -106dBm
Range: up to 100m
Tx input/Rx output: serial CMOS/TTL
Low power consumption
No adjustable components
Power supply: +2.2 to +3.5Vdc (Transmitter), +4.5 to +5.5Vdc (Receiver)
Applications: Security systems, Remote gate controls, Remote sensing, Data capture, Garage door controller, Short-range communication for the Internet of Things (IoT)

RS Product Codes
385-487 QFM-TX1-433 Transmitter
657-1362 QFM-RX1-433 Receiver


A 4-button secure remote control system can be built using one Tx and one Rx module together with the RF600 Codec chipset: RF600E Encoder, RS Part No. 505-6929 and RF600D Decoder, RS Part No. 505-6935

Wireless Modules - Quasar

Attribute Value
Module Type Transmitter
Supported Frequency Bands 433 MHz
Modulation Technique FM
Maximum RF Data Rate 4.8kbit/s
Maximum Output Power +10dBm
Supply Voltage 2.2 → 3.5V
Dimensions 12.501 x 16.802 x 2.5mm
Height 2.5mm
Length 16.802mm
Maximum Operating Temperature +85°C
Minimum Operating Temperature -20°C
Width 12.501mm
108 Available in 4-6 working days for collection or delivery to major cities, unless heavy, bulky, hazardous or lithium metal (T&C’s Apply)
Price (Excl VAT) Each
R 92.16
(exc. VAT)
R 105.98
(inc. VAT)
Per unit
1 - 4
R 92.16
5 - 9
R 90.32
10 - 24
R 87.61
25 - 49
R 84.11
50 +
R 80.75
Not Available for premium delivery