Sentry 300 030210 LCR 2-Button Remote Overview
The Sentry 300 030210 is a 2-button LCR remote transmitter used to send wireless open, close, or accessory commands to a compatible USAutomatic 433.92 MHz LCR receiver. It is commonly sold for Sentry 300 swing gate operator systems where a compact visor remote is needed for daily driveway access. The second button may be used for another compatible LCR receiver or control input when the installation is wired and programmed for that function.
This remote is part of the older LCR fixed-code radio platform, not a rolling-code or high-security transmitter family. The receiver and transmitter must share the same frequency and code format, and the dip-switch code must be set correctly. If a Sentry, Patriot, or Ranger system has been updated to a different receiver family, this remote may not program even though it looks similar to other USAutomatic transmitters.
Compatible With
Use this transmitter with select USAutomatic 433.92 MHz LCR fixed-code receivers and systems. Verify the receiver model and code format before ordering.
- Sentry 300 swing gate opener systems with compatible LCR receiver
- Sentry 300S single swing gate operator radio applications using LCR receiver format
- Sentry 300D dual swing gate operator radio applications using LCR receiver format
- USAutomatic LCR receiver applications operating at 433.92 MHz
- Commonly associated with Patriot and Ranger systems when those systems use the matching LCR receiver family
- Garage door opener control through compatible Sentry/USAutomatic garage receiver 030209 when installed
- Compatible receiver references commonly searched with this transmitter include 030214 and 030209, when wired for the application
Features and Specifications
| Manufacturer | USAutomatic / Sentry |
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| Product Type | LCR remote transmitter |
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| Part Number | 030210 |
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| Button Count | 2 buttons |
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| Frequency | 433.92 MHz |
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| Security Technology | Fixed-code LCR dip-switch format |
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| Code Combinations | 19,683 possible code combinations |
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| Battery Type | 12V type 23A alkaline battery, commonly supplied or used depending on packaging |
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| Typical Range | Varies by receiver location, antenna, interference, and battery condition |
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| Application | Wireless gate or compatible receiver control |
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| Notes | Receiver must be a compatible USAutomatic LCR fixed-code receiver |
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Also Known As / Related Part Numbers
- 030210
- 30210
- US-030210
- Sentry 030210
- Sentry 300 030210
- USAutomatic 030210
- US Automatic 030210
- LCR 2-button transmitter
- LCR 2 button remote
- 433.92 MHz Sentry remote
- Sentry 300 2 button remote
Technician Note
If the original remote has dip switches, match the code carefully. If the existing receiver uses a learn button, newer high-security receiver, or a different frequency, this 030210 LCR transmitter may not be the correct replacement.
Before Ordering Checklist
- Confirm the receiver is a USAutomatic/Sentry LCR fixed-code receiver operating at 433.92 MHz.
- Check whether the system needs a 2-button or 4-button transmitter.
- Compare the old remote part number, receiver model, and programming method.
- Replace the transmitter battery before assuming the receiver has failed.
- Confirm the system is a Sentry 300S single swing or Sentry 300D dual swing gate opener when the part is being used on a Sentry operator.
- Match the part number from the existing accessory, manual, or product label when available.
Professional Advisory
Programming and receiver wiring should be checked with the gate in a safe position. Keep clear of all moving gate and garage door parts while testing the transmitter.
Product Questions
Will the 030210 remote work with my Sentry 300 opener?
It may be used with Sentry 300 systems that have a compatible 433.92 MHz USAutomatic LCR receiver. Verify the receiver type and code format before ordering.
Is this a rolling-code remote?
No. The 030210 is an LCR fixed-code transmitter with dip-switch style coding and 19,683 possible code combinations.
Can the second button operate a garage door?
The second button can operate a compatible LCR receiver, such as a properly installed garage receiver, when it is wired and programmed for that door or device.
Why will my new 030210 not program?
Common causes include the wrong receiver family, mismatched dip-switch code, weak battery, receiver wiring issue, bad antenna placement, or a system that was upgraded to a different radio technology.
Is 030210 the same as 030212?
No. They are related LCR transmitter models, but 030210 is the 2-button version and 030212 is the 4-button version.
