27982 Parallax Inc, 27982 Datasheet - Page 2

• Manufacturer Part Number: 27982
• Description: RF Modules & Development Tools 433 MHZ RF TRANCEIVR
• Manufacturer: Parallax Inc
• Series: -r

Specifications of 27982

• Frequency: 433MHz
• Data Rate - Maximum: 9.6 kBaud
• Modulation Or Protocol: -
• Applications: General Purpose
• Power - Output: -
• Sensitivity: -
• Voltage - Supply: 3.3 V ~ 5 V
• Current - Receiving: -
• Current - Transmitting: -
• Data Interface: PCB, Through Hole
• Memory Size: -
• Antenna Connector: PCB, Through Hole
• Operating Temperature: 0°C ~ 70°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Quick Start Circuit
Figure 1: Pin Connections
Connecting and Testing
Connect the I/O pins above to your microcontroller as needed. To use the BASIC Stamp example code
you will use P0 for DATA and P1 for TX-RX. PDN and RSSI are optional and described in more detail on
the following page.
Resources and Downloads
You may download free example programs and articles from the product page on our website by
searching for 27982.
Theory of Operation
Short for Radio Frequency, RF refers to the frequencies that fall within the electromagnetic spectrum
associated with radio wave propagation.
When applied to an antenna, RF current creates
electromagnetic fields that propagate the applied signal through space. Any RF field has a wavelength
that is inversely proportional to the frequency. This means that the frequency of an RF signal is inversely
proportional to the wavelength of the field. The Parallax 433 MHz RF Transceiver utilizes a frequency of
433 MHz, this works out to be a wavelength of approximately 0.69 meters.
Copyright © Parallax Inc.
433 MHz RF Transceiver (#27982)
v1.1 11/2/2009 Page 2 of 6