Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	RHI-112A
Measurement Range (Temp)	-40°C to +85°C
Measurement Range (Humidity)	0% to 100% RH
Accuracy (Temperature)	±0.3°C
Accuracy (Humidity)	±2% RH
Interface Protocol	I2C / Digital Output
Operating Voltage	3.3V - 5.5V DC
Response Time	< 8 seconds
Package Type	SMD Module with Headers
Dimensions	15mm x 15mm x 4mm

6 reviews

Anonymous

Mar 29, 2026

Rating: 4/5

Good quality, small footprint

The module is compact and fits well on my custom PCB. The only minor issue is that the pin headers were slightly loose, but a little solder fixed that immediately.

Anonymous

Mar 28, 2026

Rating: 5/5

Reliable for agricultural monitoring

I bought five of these for my greenhouse automation system. They have been running 24/7 for a month without any drift or connection issues. Highly recommended for DIY agriculture projects.

Anonymous

Mar 15, 2026

Rating: 5/5

Best in class for the price

Compared to other sensors in this price range, the RHI-112A offers superior accuracy. The special offer made it an absolute steal. Will definitely order more for future batches.

Anonymous

Mar 15, 2026

Rating: 4/5

Solid performance, quick shipping

Good sensor overall. The humidity response is slightly slower than expected in rapid changes, but for general monitoring, it works flawlessly. The I2C address was clearly documented.

Anonymous

Mar 15, 2026

Rating: 5/5

Perfect for my weather station project

The RHI-112A module was incredibly easy to integrate with my Arduino setup. The readings are stable and match my reference thermometer almost exactly. Great value for the precision offered.

Anonymous

Mar 01, 2026

Rating: 5/5

Great documentation support

The library examples provided made coding this a breeze. Data consistency is excellent even in high-humidity environments. No condensation issues so far.

5 FAQ

Q: Can I daisy-chain multiple sensors on the same bus?

A: The RHI-112A has a fixed I2C address. To use multiple units, you will need an I2C multiplexer chip to switch between them on the same bus.

Q: What is the maximum cable length for reliable I2C communication?

A: For standard I2C speeds, we recommend keeping cable lengths under 30cm without pull-up resistor adjustments. For longer distances, consider using an I2C extender or buffer.

Q: Is this module compatible with Raspberry Pi GPIO?

A: Yes, the RHI-112A operates on 3.3V logic and supports I2C, making it fully compatible with Raspberry Pi models. Just ensure you enable the I2C interface in your OS settings.

Q: Is there a calibration certificate included?

A: Each unit is factory calibrated, but individual calibration certificates are not included with the standard special offer package. Bulk orders over 100 units may request calibration reports.

Q: Does this come with a waterproof casing?

A: No, the module itself is not waterproof and is designed for indoor use or protected enclosures. For outdoor use, we recommend placing it inside an IP65-rated project box with ventilation.

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