Keyscan elvutoa tx4prx10 4 button remote with proximity chip
KeyScan ELVUTOA TX4PRX Compatible Remote Fob & Proximity Chip
KeyScan ELVUTOA TX4PRX Compatible Remote Fob & Proximity Chip

KeyScan ELVUTOA TX4PRX Compatible Remote Fob & Proximity Chip

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The Perfect Replacement Key Fob

The RMC-555 is a complete replacement for the KeyScan TX_PRX key fob. Each key fob is made of high-quality ABS plastic and metal chain designed to last for years. As well each fob is pre-programmed to send a unique traceable ID. Each key fob also includes a pre-programmed HID chip.

Keyscan tx4prx10 elvutoa perfect replacement front

Front and back 

back of replacement remote for keyscan tx4prx10 elvutoa

Back of Remote with User ID and Facility Code

Discontinuation of TX4_PRX

The tx4_prx was discontinued by KeyScan and is no longer produced. They may still be found online but usually in a used condition or in very limited supply. Buildings must now choose to upgrade their entire system for tens of thousands of dollars. Resulting in special levies or use of their contingency reserve fund. Alternatively, they may choose to order after market key fobs such as the RMC-555. We are able to supply as many RMC-555 Key fobs as needed by our customers for the indefinite future.

Ease of Use of RMC-555

Use of the RMC-555 is the same as the tx4_prx. The RMC-555 comes with 4 buttons exactly like the original does. It sends out a 433mhz rolling code in the exact format as the original key fobs. To add to your system, you simply have to enter the batch and user code in the same fashion as the original. When a user uses the key fob, your system should log it exactly as the original would log a user’s entry. The only difference between the original and the RMC 555 is the physical shell.

Adoption Procedure for RMC-555

The RMC-555 should work right out of the box with your current system. Understandably, your building may be hesitant to try a new supplier. We offer a 30 day return policy if you are unsatisfied with your purchase.

Delivery Schedule

Key fobs are shipped upon receipt of payment, if there is a delay in delivery you will be notified immediately. As well if you need custom programming, this can add delays to the delivery schedule.

Initial contact


Sample is sent for verification

3-5 business days

Custom Programming

3-5 business days

Delivery of Key Fobs

3-5 business days


Warranty/Return Policy

We offer a 1-year warranty on all remote fobs from date of purchase. We will replace any key fob sent back to us for only the cost of shipping.

We also offer a 30-day return policy from date of order placement. If you are unhappy for any reason with your purchase, we will refund your whole order upon receipt of our key fobs in unused condition. There is a 10% restocking fee on used key fobs.


The RMC 555 is the perfect replacement for the discontinued TX4_PRX10 Fob. Dozens of buildings have already purchased the RMC-555 in lieu of spending tens of thousands of dollars to upgrade their existing system. Our warranty and return policy will allow you to rest easy knowing that you will be supported in your purchase.

Demonstration Videos



Will the key fobs look the same?

No they will look slightly different.

Will the steps to programming the fob into the system be the same?

Yes they will function exactly like the original fob.

Will it open the garage door and the normal tap scanners?

Yes, they will work in exactly the same way as the original.

Does it work for garage and regular doors?

 Yes it will work for both.