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433 MHZ TRANSMITTER AND RECEIVER MODULES

433 MHZ TRANSMITTER AND RECEIVER MODULES

$3.50

This is a very low cost transmitter and receiver pair. Typical transmission distances are up to 100 yards or meters. They are very suitable for remote control (with longer distances than IR and no direct line of sight required), sensor transmission or data logging applications. Use of antennas, particularly on the transmitter will ensure decent transmission/reception distances. A quarter-wave antenna of around 17.5 cm or 8.2 inches is the calculated length. In practice a length of wire around 12 inches has proved better. The transmitter can be driven at varying voltages up to 12V max. At 9V we were able to achieve transmission from any position to any other in a 3,000 square feet house in a third of an acre plot using 12" antennas at 2400 bps. The virtualWire library makes it easy to use the devices with Arduino.

Specifications (transmitter)

  •  Working voltage: 3V•__12V
  •  Working current: max≤40mA (12V), min≤9mA(3V)
  •  Resonance mode: sound wave resonance (SAW)
  •  Modulation mode: ASK /OOK
  •  Working frequency:433.92MHz
  •  Transmission power: 25mW (315MHz at 12V)
  •  Frequency error: +150kHz (max)
  •  Transmission rate: ≤10Kbps
Specifications (receiver)
  • Working voltage: 5.0VDC +0.5V
  • Working current:≤5.5mA (5.0VDC)
  • Working principle: single chip super-regeneration receiver
  • Working method: OOK/ASK
  • Working frequency: 433.92MHz
  • Sensitivity: excel –100dBm (50Ω)
  • Transmitting velocity: max 9.6Kbps

http://www.oddwires.com/433-mhz-transmitter-and-receiver-modules-great-for-arduino/