RFID Guide
Learn more about Phidget RFID interfaces here.
Products for USB Sensing and Control
If you need a metal mount RFID tag, the 3921_0 – 5cm Metal Mount RFID Tag is a larger version of the 3904.
This RFID tag is a white plastic square with adhesive backing. The tag continues to operate normally when attached to metals, unlike most standard RFID tags. The tag contains a unique ID that can be read by the 1024 – RFID reader at a distance of 5cm or less.
| Tag Properties | |
|---|---|
| Supported Protocols | EM4102 |
| Tag Characteristics | Passive, Read-Only |
| Transmission Frequency | 125 kHz |
| Encoding Method | Manchester |
| Message Length | 64 bit |
| Unique ID Length | 40 bit |
| Typical Read/Write Distance (with 1024 - PhidgetRFID R-W) |
50 mm |
| Physical Properties | |
| Material | ABS |
| Color | White |
| Thickness | 4.3 mm |
| Length | 30 mm |
| Width | 30 mm |
| Weight | 7.2 g |
| IP Rating | IP68 |
| Customs Information | |
| Canadian HS Export Code | 8523.52.00 |
| American HTS Import Code | 8523.52.00.90 |
| Country of Origin | TW (Taiwan) |
This tag uses the EM4012 protocol (part of the EM4100 series) and can be read by any of the RFID readers in the table below. If you're using a different RFID reader, make sure it's designed to work at 125 kHz and supports this tag's protocol.
| Product | RFID Reader | |||
|---|---|---|---|---|
| Part Number | Price | Antenna Resonant Frequency Min | Antenna Resonant Frequency Max | Supported Protocols |
 PhidgetRFID Read-Write
|
$80.00 | — | — | EM4100, ISO11785 FDX-B, HID 26-bit (H10301), HID Generic, PhidgetTAG |
 PhidgetRFID Read-Write
|
$60.00 | 125 kHz | 150 kHz | EM4100, ISO11785 FDX-B, PhidgetTag |
| Product | Tag Properties | |||
|---|---|---|---|---|
| Part Number | Price | Supported Protocols | Tag Characteristics | Typical Read/Write Distance (with 1024 - PhidgetRFID R-W) |
 RFID Tag - 50mm Metal Mount
|
$2.50 | EM4100 | Passive, Read-Only | 80 mm |
 RFID Tag - Credit Card Sized
|
$1.10 | EM4100 | Passive, Read-Only | 110 mm |
 Writable RFID Tag - Credit Card Sized
|
$1.50 | EM4100, ISO11785 FDX-B, HID 26-bit (H10301), HID Generic, PhidgetTAG | Passive, Read/Write | 120 mm |
 RFID Tag - Watch with Adjustable Strap
|
$2.75 | EM4100 | — | 80 mm |
 RFID Tag - Watch with Elastic Strap
|
$2.00 | EM4100 | Passive, Read-Only | 80 mm |
 Writable RFID Tag - Watch with Adjustable Strap
|
$3.00 | EM4100, ISO11785 FDX-B, HID 26-bit (H10301), HID Generic, PhidgetTAG | Passive, Read/Write | 100 mm |
 RFID Tag - Key Fob with Key Ring
|
$1.30 | EM4100 | Passive, Read-Only | 80 mm |
 RFID Tag - Key Fob
|
$1.30 | EM4100 | Passive, Read-Only | 80 mm |
 Writable RFID Tag - Key Fob with Key Ring
|
$1.20 | EM4100, ISO11785 FDX-B, HID 26-bit (H10301), HID Generic, PhidgetTAG | Passive, Read/Write | 100 mm |
 RFID Tag - 18mm Disc
|
$1.00 | EM4100 | Passive, Read-Only | 50 mm |
 RFID Tag - 22mm Clothing Button
|
$2.00 | EM4100 | Passive, Read-Only | 60 mm |
 Writable RFID Tag - 25mm Disc
|
$1.50 | EM4100, ISO11785 FDX-B, HID 26-bit (H10301), HID Generic, PhidgetTAG | Passive, Read/Write | 100 mm |
 RFID Tag - 30mm Disc
|
$1.00 | EM4100 | Passive, Read-Only | 80 mm |
 RFID Tag - 30mm Disc with Hole
|
$1.30 | EM4100 | Passive, Read-Only | 100 mm |
 Writable RFID Tag - 30mm Disc
|
$1.50 | EM4100, ISO11785 FDX-B, HID 26-bit (H10301), HID Generic, PhidgetTAG | Passive, Read/Write | 100 mm |
 Writable RFID Tag - 30mm Disc with Hole
|
$2.30 | EM4100, ISO11785 FDX-B, HID 26-bit (H10301), HID Generic, PhidgetTAG | Passive, Read/Write | 100 mm |
 RFID Tag - 30mm Threaded
|
$0.80 | EM4100 | Passive, Read-Only | 70 mm |
 RFID Tag - Bird Leg Ring
|
$0.80 | EM4100 | Passive, Read-Only | 50 mm |
