
250 Series RF Transceiver Module
High Power Wireless UART RF Transceiver Module
This product has reached End of Life. Please contact Linx about the Amplified HumPRO™ Series, which replaces the 250 Series.
The 250 Series RF transceiver module is designed for reliable bi-directional transfer of digital data over distances of up to 4 miles (6.4km, line of sight). Operating in the 902 to 928MHz frequency band, the module is capable of generating +23.5dBm into a 50-ohm load and achieves an outstanding typical sensitivity of -105dBm. This high output power gives the module exceptional range and also helps overcome noisy environments at shorter ranges. The module implements a Frequency Hopping Spread Spectrum (FHSS) protocol along with networking and assured delivery features. It has a Universal Asynchronous Receiver Transmitter (UART) serial interface that can be connected directly to microcontrollers, RS-232 converters or USB adaptors. The module automatically handles all radio functions resulting in a UART-to-antenna wireless link. All configuration settings and data are accessed through the UART interface. The 250 Series has a compatibility mode that enables it to operate with the smaller and lower cost 25 Series modules. This enables mixed systems where a determination between cost and range can be made.
Benefits
- Easy integration: a complete radio, protocol and UART interface results in a complete UART-to-antenna solution
- High reliability: high power and a FHSS protocol combined with networking and assured delivery combine to create a robust system
- Low overhead: all configuration settings are done through the UART interface and the built in protocol handles all over-the-air functions, so very little software development is required
- Simplify design: modules and antennas are the only RF components you need; no tuning required
- Streamline production: save time and money with modules that are already tested
- Pre-certified: Evaluation modules are already certified
Ordering
Part | Description | Documentation | Stocking |
---|---|---|---|
TRM-915-R250 | 900MHz 250 Series Transceiver, 250mW | Datasheet | |
EVM-915-250-FCS | 900MHz 250 Series Evaluation Module, Straight RP-SMA Connector, Pre-Certified | Datasheet | |
EVM-915-250-FCR | 900MHz 250 Series Evaluation Module, Right Angle RP-SMA Connector, Pre-Certified | Datasheet | |
EVM-915-250-BZS | 900MHz 250 Series Evaluation Module, Straight RP-SMA Connector, Pre-Certified Brazil (End of Life) | Datasheet | |
EVM-915-250-BZR | 900MHz 250 Series Evaluation Module, Right Angle RP-SMA Connector, Pre-Certified Brazil (End of Life) | Datasheet | |
EVM-915-250-CFS | 900MHz 250 Series Evaluation Module, Straight RP-SMA Connector, Pre-Certified Mexico | Datasheet | |
EVM-915-250-CFR | 900MHz 250 Series Evaluation Module, Right Angle RP-SMA Connector, Pre-Certified Mexico | Datasheet |
To order, please call +1 (800) 736-6677 or +1 (541) 471-6256 for callers outside the United States.
TRM-915-R250 | |
---|---|
Role | Transceiver |
Frequency | 902 – 928MHz |
TX power | 8 – 23.5dBm |
RX sensitivity | -105dBm typical |
Interface | UART |
Modulation | FSK |
Operating voltage | 2.7 – 3.6VDC |
Supply current | TX @ 23.5dBm: 190mA typical TX @ 8dBm: 54mA typical RX: 25mA typical |
Standby current | 1.5mA typical |
Sleep current | 3µA typical |
Operating temperature | -40 – +85°C |
Package | Reflow-compatible SMD |
Architecture | Synthesized |
Protocol | Built in FHSS with CSMA, networking and assured delivery |
Application Examples
- Home and industrial automation
- Automatic meter reading (AMR)
- Wireless sensor networks
- Security systems
- Long-range data links
Downloads
Manuals & Datasheets
- TRM-915-R250 Data Guide
- EVM-915-250 Data Guide
- MDEV-915-250 User’s Guide
- MDEV-fff-250 Quick Start Guide
Application Notes
Application Notes 902-928MHz
- Guide to Wireless Regulations in the United States (FCC Resource Document)
- RF 101: Information for the RF Challenged (AN-00100)
- Considerations for Operation within the 902 MHz to 928 MHz Band (AN-00126)
- Data and Bidirectional Transmissions under Part 15.231 (AN-00128)
- Modulation Techniques for Low-Cost RF Data Links (AN-00130)
- The FCC Road: Part 15: From Concept to Approval (AN-00140)
- Antennas: Design, Application and Performance (AN-00500)
- Understanding Antenna Specifications and Operation (AN-00501)