RFID Vehicle Access Control & Parking
Plan an RFID vehicle access control system: UHF windshield tags, long-range lane readers, Wiegand controllers and barrier triggering. Lane BOM and samples.
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GM-150 US/EU Dual-Band UHF RFID Reader Module, 7–30 dBm, TTL
One UHF reader module for both 865–868 MHz and 902–928 MHz builds: 7–30 dBm output (±1 dB), sensitivity below −85 dBm, hardware watchdog and TTL UART.
- One part covers 865–868 MHz (ETSI) and 902–928 MHz (FCC), with no band variant to stock
- 7–30 dBm output, ±1 dB accuracy and ±0.2 dB flatness
- Receiver sensitivity < −85 dBm; reads 915 MHz long-range UHF cards
- Peak inventory above 100 tags/s, plus an algorithm tuned for fast few-tag response
- Hardware watchdog and PA saturation monitoring for continuous operation
- Frequency
- 865–868 MHz and 902–928 MHz
- Output power
- 7–30 dBm (±1 dB)
- Sensitivity
- < −85 dBm
- Interface
- TTL UART
- Power
- 4.5–5.5 V DC, 300 mA–2.5 A
- Dimensions
- 56 × 36.5 mm
Reply within 24 hours Tested before dispatch Worldwide shipping
US/EU Dual-Band UHF RFID Reader Module, 7–30 dBm, TTL: overview
The GM-150 is a US/EU dual-band UHF RFID reader module: one part covers both the ETSI 865–868 MHz and FCC 902–928 MHz bands, so an OEM can stock a single module for European and North American builds instead of two. It fits parking and vehicle-access readers, barrier-gate readers and other fixed devices that need a mid-to-long-range EPC Gen2 engine behind a TTL UART.
Output power is adjustable from 7 to 30 dBm with ±1 dB accuracy and ±0.2 dB flatness, and receiver sensitivity is below −85 dBm. The module reads 915 MHz long-range UHF cards, and inventory peaks above 100 tags per second. Next to its multi-tag algorithm, the firmware includes an optimization for scenes with only a few tags in the field, which shortens response time when a single vehicle tag arrives at a barrier.
A dual-CPU design polls tags and passes data to the host in parallel. A hardware watchdog supervises the processor for year-round unattended operation, and the RF power amplifier is monitored so it does not run into saturation during long duty cycles.
Integration notes
Supply 4.5–5.5 V DC. Specified operating current ranges from 300 mA to 2.5 A, so size the regulator for the upper figure. The UART runs at 115200 bps by default, with 38400 bps available. The board measures 56 × 36.5 mm (±1 mm) and is rated for −25 to +70 °C operation. Region plans for FCC, ETSI EN 302 208, China, Korea and Malaysia are listed.
More features
- Dual-CPU design: tag polling and host data transfer run in parallel
- 56 × 36.5 mm board, TTL UART at 115200 or 38400 bps
GM-150 specifications
RF & protocols
| Frequency range | 902–928 MHz and 865–868 MHz (same module) |
|---|---|
| Region plans listed | FCC (US, Canada), ETSI EN 302 208 (Europe), China, Korea, Malaysia |
| Air protocol | EPCglobal UHF Class 1 Gen 2 / ISO 18000-6C |
| Supported cards | EPC Gen2 tags, including 915 MHz long-range UHF cards |
| Output power | 7–30 dBm |
| Output power accuracy | ±1 dB |
| Output power flatness | ±0.2 dB |
| Receiver sensitivity | < −85 dBm |
Performance & reliability
| Peak inventory speed | > 100 tags/s |
|---|---|
| Algorithms | Multi-tag inventory algorithm; optimized algorithm for few-tag scenes |
| Architecture | Dual CPU (tag polling and data output in parallel) |
| Supervision | Hardware watchdog; RF power-amplifier saturation monitoring |
Interfaces
| Host interface | UART, TTL level |
|---|---|
| Baud rate | 115200 bps (default), 38400 bps |
Electrical
| Supply voltage | 4.5–5.5 V DC |
|---|---|
| Operating current | 300 mA–2.5 A |
Mechanical & environment
| Dimensions | 56 × 36.5 mm (±1 mm) |
|---|---|
| Operating temperature | −25 to +70 °C |
| Storage temperature | −30 to +80 °C |
| Relative humidity | 5–85% (at +25 °C) |
Specifications can change between production batches. Confirm the current revision with us before placing volume orders.
Ordering options
Quote the SKU that matches your frequency, interface and mounting. Not sure? Send us your controller model and we will pick the variant for you.
| SKU | Configuration | Actions |
|---|---|---|
| GM-150-US-EU | Dual-band module, 865–868 MHz and 902–928 MHz in one part, TTL UART |
Where the GM-150 is used
- One reader design shipped to both EU and US parking projects without a band change
- Barrier-gate reader that must react quickly to a single windshield tag
- Fixed reader for container yards or gates running around the clock
- Distributor stock that serves mixed-region orders from one part number
UHF RFID for Warehouses, Dock Doors & Portals
Plan RFID for warehouse management: fixed readers and circular antennas at dock doors, conveyor tunnels, handheld cycle counts and on-metal asset tags.
RFID Asset & Tool Tracking
Build an RFID asset tracking system: on-metal, ceramic and tie-on tags matched to each asset, handheld audits, smart cabinets and IP67 HF heads for tooling.
GM-150 FAQ
Do I need separate EU and US versions?
No. GM-150-US-EU covers both 865–868 MHz and 902–928 MHz in the same module, so one part number serves both markets. Let us know the destination country so we can confirm the regional channel settings before shipping.
How much current should my supply provide?
Operating current is specified at 300 mA to 2.5 A on a 4.5–5.5 V DC rail. Size the regulator for 2.5 A to leave headroom at full output power.
How accurate is the output power setting?
Output power is adjustable from 7 to 30 dBm with ±1 dB accuracy and ±0.2 dB flatness.
What keeps it running in unattended installations?
A hardware watchdog supervises the CPU, and the RF power amplifier is monitored to keep it out of saturation. Operating temperature is −25 to +70 °C.
Before you buy
Related buyer guides
UHF RFID Frequency by Country: 902–928 MHz vs 865–868 MHz and Other Bands
Compare UHF RFID reader bands by country, including US, EU, UK, China, India and Japan. Understand ERP, EIRP, channel conditions and radio approvals.
How to Wire a Long-Range UHF Reader to an Access Controller or Barrier
Wire a UHF reader's D0, D1 and ground to your controller, match 26/34-bit Wiegand, size 12 V power and trigger the barrier by relay. Diagrams included.
Does RFID Work on Metal? How to Choose On-Metal Tags
Yes, RFID works on metal with tags built for it. See why metal detunes standard tags, compare ABS, PCB, ceramic and label tags, and test read range properly.
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