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DNT900P
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900 MHz Transceiver Module
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Click here if you need additional technical information,
to inquire about samples or to discuss your custom needs.
• 900 MHz Frequency Hopping Spread Spectrum Transceiver
• Point-to-Point, Point-to-Multipoint, Peer-to-Peer and Tree Routing Network Topologies
• Transmitter Power Configurable from 1 mW to 1 W
• RF Data Rate Configurable from 38.4 to 500 kbps
• Serial Port Rate up to 460.8 kbps for Streaming Applications and Master/Slave SPI port
• 128-Bit AES Encryption
• Separate Serial Port for Diagnostics
• Analog and Digital I/O for Sensor Applications
• FCC and Canadian IC Certified for Unlicensed Operation
• Sleep Modes and Auto-reporting
• CSMA Modes for Unlimited Number of Nodes
• TDMA Mode for Guaranteed Bandwidth
• Pin-for-pin Compatible with RFM DNT2400 2.4GHz Module
• Module single unit $69 / volume discounts available
• Development Kit $359
Click here if you need additional technical information,
to inquire about samples or to discuss your custom needs.
download
data sheet
Rev Date 06/11/09
download product manual
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- Features
- AppNotes
- Dev Kit
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- Buy Now
| The DNT900 series transceivers provide highly reliable wireless connectivity for point-to-point, point-to-multipoint, peer-to-peer, and tree routing applications.
Frequency hopping spread spectrum (FHSS) technology ensures maximum resistance to multipath fading and robustness in the presence of interfering signals, while operation in the 900 MHz ISM band allows license-free use in the US, Canada, South America, Israel, Australia and New Zealand. The DNT900 supports all standard serial data rates for host communications from 1.2 to 460.8 kb/s. On-board data buffering and an error-correcting air protocol provide smooth data flow and simplify the task of integration with existing applications. Key DNT900 features include:
• Multipath fading resistant frequency hopping technology with up to 50 frequency channels (902 to 928 MHz).
• Selectable 1, 10, 100, 250, 500 or 1000 mW transmit power with a firmware interlock of 85 mW maximum for 500 kb/s operation.
• Support for point-to-point or point-to-multipoint applications with tree routing for extended coverage.
• AES-128 encryption secures data
• FCC 15.247 certified for license-free operation.
• Separate Serial Port for Diagnostics
• 40 mile plus range with omni-directional antennas (antenna height dependent).
• Dynamic TDMA slot assignment that maximizes throughput and CSMA modes that maximizes network size.
• Transparent ARQ protocol with data buffering ensures data integrity
• Simple serial interface handles both data and control at up to 460.8 kb/s plus a Master/Slave SPI port
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| White Papers |
Lightning and Surge Protection
Because wireless systems are typically located out of doors and have components located on towers and tall buildings, they are especially susceptible to damage from lightning. This paper explores the proper design and implementation of a communications surge protection system to reduce down time and lower liability for people and property. (~ 152 KB, Adobe PDF format.) |
RF Power Options in ZigBee™ Solutions
While ZigBee is a "low power" standard, "high power" product versions are much needed — and are very much ZigBee standard. This paper explains how the the availability of ZigBee radios with high and low RF power options is key to ZigBee's appeal in industrial settings, allowing design engineers to tie radio selection directly to an application’s requirements for range and resistance to multipath fading. |
WaveBolt System Description
The WaveBolt™ system is a fixed wireless point-to-multipoint Internet access system designed specifically for residential and small business customers in areas where DSL and cable modem access are unavailable, unaffordable or otherwise undesirable. The WaveBolt system provides data speeds comparable to ADSL. Simple to install, the WaveBolt CPE in many cases will be installed by the end user. And, where customers choose to have the CPE installed, a single, short site visit is all that is required to complete the installation. (~ 162 KB, Adobe PDF format.) |
Wireless Communications for Industrial Applications
This paper examines the unique requirements and challenges of wireless communications in an industrial setting and provides an overview of RFM wireless products designed specifically for these applications. The information presented serves as a guide for systems integrators and end users responsible for factory floor automation, industrial/PLC control, SCADA, telemetry and related data communications applications. (~ 136 KB, Adobe PDF format.) |
Wireless Transceivers—Make or Buy?
In choosing to add wireless data capability to a new or existing product, every designer faces a critical decision: whether to engineer the functionality in-house or buy a ready-made module for the application. This paper provides a cost analysis to explore the relative merits of each approach. (~ 160 KB, Adobe PDF format) |
ZigBee Wireless Transceiver Engineering Options
ZigBee's mesh networking capability, which compensates for obstructions and reduces range requirements, is especially prized in industrial applications. But with a technology this new, how can the RF designer best realize a successful ZigBee implementation? This white paper provides a brief, realistic assessment of ZigBees value in industrial environments, examines the types of components available today at the chip and module level, and discusses the practical considerations to be weighed in deciding to pursue ZigBee mesh networking in a specific application. |
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| Case Studies |
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Digital sign control
A maker of commercial electronic signs chose RFM HopNet wireless serial modems to replace costly cabling runs. |
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Heavy duty automation
Wireless communications from databases to crane scales automate aluminum manufacturing. |
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Parking control
Upgrading a parking facility to monitor space availability without cutting cable trenches. |
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| Developer Kits |
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The DNT900 Development Kit is available as part number: DNT900DK
The DNT900 FHSS transceiver module is a low cost, high-power solution for point-to- I/O point
and point-to-multipoint wireless systems in the 900 MHz ISM band. The RF output power of the
DNT900 can be set from 1 mW to 1 W, and the RF data rate can be set from 38.4 to 500 kb/s. The
DNT900 receiver includes a low-noise preamplifier protected by two SAW filters, providing an
excellent combination of receiver sensitivity and out-ofband interference rejection. The DNT900
module includes analog, digital and serial I/O, providing the flexibility and versatility to serve
applications ranging from cable replacements to sensor networks. The DNT900 transceiver
module is easy to integrate and provides robust wireless communications up to 40 miles in lineof-
sight installations and tree routing for extended coverage. |
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| RFM Part |
Frequency |
Description |
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| (2) DNT900P radios, (2) DNT900 development boards, (2) 2 dBi dipole antennas, (2) 120/240 VAC 9 V wall-plug power suppliers, (2) 9 V batteries, (2) RJ-45/DB-9F cable assemblies, (1) RJ-11/DB-9F cable assembly, (2) A/B USB cables, DNT900DK documentation and software CD |
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RFM’s DNT900 is the best in class among all 900 MHz Transceivers.
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RFM products are sold through a world-wide network of manufacturer's sales reps and distributors.
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