The smallest, most versatile 125khz 12V RFID reader on the market. This ultra-compact proximity sensor solves the two biggest problems with traditional RFID readers: no master key required for programming, and readers can be placed as close as 0.5" apart without causing interference or read errors.
Need a complete plug-and-play solution? Check out our RFID Reader Kit with Relay & Power Supply - includes everything you need to control magnetic locks, lights, or props right out of the box. No additional wiring or components required—just connect and activate. → See Complete Kit
Why Choose the Micro RFID Reader 12V?
No More Lost Master Keys
Traditional RFID systems become useless if you lose the master programming key. Our Micro RFID Reader features push-button programming built directly into the module—no master key, no external programmer needed. Add, remove, or clear cards with simple button sequences. Store up to 35 RFID cards in onboard memory.
Ultra-Compact Design for Tight Spaces
At only 1" x 2" x 0.25", this is one of the smallest 12V RFID readers available. The miniature form factor makes it ideal for:
- Hidden installation behind props and scenery
- Embedding in escape room puzzles with limited space
- Multi-reader setups in compact interactive exhibits
- Museum installations where visibility must be minimal
- Tight mounting locations where standard readers won't fit
Close-Proximity Multi-Reader Setup
Unlike older RFID readers that require 6-12 inches of separation, the Micro RFID Reader can be placed as close as 0.5" apart without crosstalk or false readings. This breakthrough allows you to create complex multi-card puzzles in small areas—perfect for escape room props, interactive game controllers, and museum exhibits with multiple touchpoints.
Consistent Short-Range Performance
Featuring up to 1" read range (through material), this 125kHz RFID sensor delivers reliable, repeatable activation. The shorter read distance eliminates accidental triggers and provides precise control for puzzle applications. Reads through wood, plastic, acrylic, and other non-metallic materials up to 1 inch thick.
Professional-Grade Reliability
- 125kHz frequency (TK4100 chip compatible)
- 12VDC input with only 20mA current draw
- 5V/25mA output when correct card detected
- Output stays HIGH as long as card is present; returns LOW immediately when removed
- LED status indicators for successful reads and programming feedback
- Front-to-back read orientation with properly aligned mounting holes
- 2 mounting screw holes for secure installation
- 3-wire connection: 12V+, GND, Signal Out
Technical Specifications
| Specification | Details |
|---|---|
| Dimensions | 1" x 2" x 0.25" (25mm x 50mm x 6mm) |
| Operating Frequency | 125kHz |
| Compatible Cards | TK4100 chip (EM4100/EM4200 family) |
| Card Storage | Up to 35 cards in onboard memory |
| Input Voltage | 12VDC |
| Current Draw | 20mA |
| Output Voltage | 5V |
| Output Current | 25mA max |
| Read Range | 0.5" to 1" (through non-metallic materials) |
| Minimum Reader Spacing | 0.5" apart without interference |
| Programming Method | Push-button (no master key required) |
| Mounting | 2 screw holes, front-to-back orientation |
| Status Indicators | LED for read success and programming feedback |
| Connections | 3-wire: 12V+, GND, Signal Out |
Perfect For:
✅ Escape Room Puzzles - Create multi-card sequence puzzles in compact props
✅ Interactive Museum Exhibits - Hidden sensors for touchless artifact interaction
✅ Theme Park Attractions - Reliable object-placement games and challenges
✅ Haunted House Props - Trigger effects when visitors place themed items
✅ Mini Golf Installations - Score tracking and interactive hole triggers
✅ Educational Installations - Interactive learning stations and exhibits
✅ DIY Automation Projects - Access control, prop activation, game controllers
✅ Entertainment Venues - FEC games, arcade props, interactive displays
Easy Card Programming
Add a New Card:
- Power ON
- Press program button once
- LED turns OFF
- Place RFID card near reader
- LED flashes twice = success
- Press button to return to normal mode
Delete One Card:
- Power ON,
- Hold program button for 2 seconds
- LED turns OFF, release button
- Place card to delete near reader
- LED flashes twice = deleted
- Press button to return to normal mode
Clear All Cards:
- Hold button, then power ON
- LED flashes twice after 3 seconds
- Release button
- All 35 card slots cleared and ready to reprogram
Comparison: Micro RFID Reader vs. Standard RFID Units
| Feature | Micro RFID Reader 12V | Standard RFID Unit |
|---|---|---|
| Size | 1" x 2" x 0.25" | 2.5" x 2.5" x 1"+ |
| Programming | Push-button (no master key) | Requires master key/programmer |
| Minimum Spacing | 0.5" apart | 6-12" apart |
| Read Range | 0.5-1" (precise) | 2-4" (less precise) |
| Card Storage | 35 cards onboard | 25 |
| Lost Key Problem | Never locked out | Unit becomes unusable |
| Installation Flexibility | Extreme (fits anywhere) | Limited by size |
| Multi-Reader Setup | Easy (tight spacing) | Difficult (interference issues) |
What's Included:
- 1x Micro RFID Reader 12V module (1" x 2" x 0.25")
- 1x Pre-programmed 125kHz RFID card (credit card size)
- Programming instructions
Note: 12V power supply and wiring not included. Reader requires 12VDC input ). Signal output is 5V/25mA—suitable for driving small relays, LEDs, or connecting to our P2 Whisper
Installation Tips:
- Mount behind wood, plastic, or acrylic up to 1" thick
- Cannot read through metal surfaces
- Front-to-back read direction (mount with component side toward cards)
- Use 2 screw holes for secure permanent mounting
- In multi-reader setups, minimum 0.5" spacing between units
- 3-wire connection integrates easily with existing 12V systems
Upgrade Your RFID Projects
Whether you're building escape room puzzles, interactive museum exhibits, or automated props, the Micro RFID Reader 12V delivers professional performance in an impossibly small package. No more worrying about lost master keys, reader interference, or bulky modules that won't fit your installation.
Perfect for:
- Escape room designers and operators
- Museum exhibit fabricators
- Theme park attraction builders
- Interactive installation artists
- Haunted attraction prop makers
- DIY automation enthusiasts
- Entertainment venue operators
Order your Micro RFID Reader 12V today and experience the freedom of compact, keyless RFID control.