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.
ValenID · valenid.com · sales@valenid.com
IH-120 M30 HF RFID Read Head, RS485 Modbus RTU, IP67
Threaded Ø30 × 65 mm IP67 read head for ISO 15693 and 14443A tags, rated up to 80 mm and reporting over RS485 Modbus RTU through an M12 connector.
- M30 threaded barrel, Ø30 × 65 mm, clamps into a bracket with two lock nuts
- Reads ISO 15693 and ISO 14443A tags at 0–80 mm, depending on the tag
- About 45–60 mm with a Ø30 mm industrial tag, depending on build
- RS485 at 9600–115200 bit/s with Modbus RTU; M12 connector
- 24 V DC, 2 W max; orange status LED; firmware update over serial
- Frequency
- 13.56 MHz (ISO 15693 / ISO 14443A)
- Read range
- 0–80 mm (tag-dependent)
- Interface
- RS485, Modbus RTU
- Power
- 24 V DC, 2 W max
- Housing
- M30 barrel, Ø30 × 65 mm, M12 connector
- Protection
- IP67, –40 to +70 °C
Reply within 24 hours Tested before dispatch Worldwide shipping
M30 HF RFID Read Head, RS485 Modbus RTU, IP67: overview
The IH-120 is a 13.56 MHz RFID read head in a threaded M30 barrel, sized for fixed identification points on a production line: pallets and workpiece carriers at assembly stations, trays on food-processing conveyors, or tool holders at a machine. It installs like a Ø30 mm proximity sensor. Pass it through a bracket, clamp it with the two lock nuts and plug in an M12 cable.
The head reads ISO/IEC 15693 and ISO/IEC 14443A tags through an integrated PCB antenna behind its black sensing cap. Rated read distance is 0–80 mm depending on the tag. With a Ø30 mm industrial tag, the rating is about 45–60 mm depending on build, so test the working gap with a sample before fixing bracket positions.
The IP67 housing is rated for operation from –40 to +70 °C and for ESD of ±10 kV air and ±8 kV contact discharge, which suits machine frames and wet or dusty line environments.
Integration notes
The head runs from 24 V DC and draws no more than 2 W. Data travels over RS485 at 9600–115200 bit/s using Modbus RTU, so it can wire straight into a PLC serial module, or into an Ethernet network through an RS485-to-Ethernet gateway. An orange LED blinks to show operating status, firmware is updated over the serial port, and an API kit with C, C# and Java sample programs supports PC-side testing. The complete set weighs about 140 g.
More features
- IP67, –40 to +70 °C, ESD ±10 kV air / ±8 kV contact
- API kit with C, C# and Java sample programs
IH-120 specifications
RF & tags
| Operating frequency | 13.56 MHz |
|---|---|
| Air protocols | ISO/IEC 15693, ISO/IEC 14443A |
| Read distance | 0–80 mm, depending on tag |
| With Ø30 mm industrial tag | approx. 45–60 mm, depending on build (confirm with sample) |
| Antenna | Integrated PCB antenna |
Interfaces & software
| Interface | RS485 |
|---|---|
| Protocol | Modbus RTU |
| Serial baud rate | 9600–115200 bit/s |
| Status indication | Orange LED (blinks to show operating status) |
| Firmware update | Over the serial port |
| Software support | API development kit with C, C# and Java sample programs |
Electrical
| Supply voltage | 24 V DC |
|---|---|
| Power consumption | 2 W max |
| ESD immunity | ±10 kV air discharge, ±8 kV contact discharge |
Mechanical & environment
| Dimensions | Ø30 × 65 mm |
|---|---|
| Housing | Threaded cylindrical barrel (M30 form factor) with two lock nuts |
| Connection | M12 connector, M12 female-connector cable harness |
| Weight | approx. 140 g (complete set) |
| Ingress protection | IP67 (IEC) |
| Operating temperature | –40 to +70 °C |
| Operating humidity | 5–95% RH, non-condensing |
Ordering code
| Variant SKU | Housing | Interface | Connection | Supply |
|---|---|---|---|---|
| IH-120-RS | M30 threaded barrel, Ø30 × 65 mm | RS485, Modbus RTU | M12 | 24 V DC |
Industrial HF reader family comparison
| SKU | Form factor | Dimensions | Rated read distance | With Ø30 mm industrial tag | Interfaces | Weight |
|---|---|---|---|---|---|---|
| IH-110 | Square networked reader/writer | 95 × 95 × 40 mm | Up to 110 mm (ISO 15693) | 110 mm read / 100 mm write | Ethernet, RS232, RS485 (Wi-Fi optional) | approx. 1.1 kg |
| IH-120 | M30 threaded barrel read head | Ø30 × 65 mm | 0–80 mm | approx. 45–60 mm (by build) | RS485 | approx. 140 g |
| IH-130 | Square block read head | 40 × 40 × 45 mm | 0–80 mm | approx. 60 mm | RS485 | approx. 120 g |
| IH-140 | Compact threaded barrel read head | Ø30 × 60 mm | 0–50 mm | approx. 35 mm | RS485 | approx. 80 g |
Read figures are tag-dependent. Weights are for the complete set as supplied.
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 |
|---|---|---|
| IH-120-RS | M30 13.56 MHz read head, ISO 15693/14443A, RS485 Modbus RTU, M12 connector, IP67 |
Where the IH-120 is used
- Identifying workpiece carriers at each station of a parts-assembly line
- Reading ISO 15693 tags on trays moving through food-processing conveyors
- Checking which tool holder or fixture is loaded before a machine cycle starts
- Retrofitting an ID point into an existing Ø30 mm sensor bracket
IH-120 FAQ
How is the IH-120 mounted?
Like a Ø30 mm cylindrical sensor: pass the threaded barrel through a bracket hole and clamp it with the two lock nuts, with the black sensing cap facing the tag path.
What read distance should I plan for?
The head is rated 0–80 mm depending on the tag, and about 45–60 mm with a Ø30 mm industrial tag depending on build. Metal around the sensing cap reduces range, so confirm the gap with a sample in your fixture.
Does it support Modbus TCP?
Not directly. The IH-120 has a single RS485 port that carries Modbus RTU. For an Ethernet network, place an RS485-to-Ethernet gateway between the head and the PLC, or use the IH-110 reader, which has Modbus TCP built in.
What cable does it use?
The head has an M12 connector and uses an M12 female-connector cable harness for 24 V DC power and the RS485 pair. Ask for the pin assignment and specify the cable length on your RFQ.
Can the head write data to tags?
The published rating covers reading only. If your process must write lot or step data to the tag, contact us to confirm write support and write distance for your tag type, or use the IH-110, which is rated to write at up to 100 mm on ISO 15693.
Before you buy
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Get pricing for the IH-120
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