# Temperature sensor Shelly DS18B20 with 3 m cable

**URL:** https://aio.lv/en/product--shelly-shellytemp3m--10639873
**Data updated:** 2026-02-12 22:01 (EET)
**Category:** Smart Sensors
**Manufacturer:** Shelly
**Manufacturer code:** Shelly\_Temp\_3m
**EAN:** 3800235266403
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Wired temperature sensor Shelly DS18B20 with a 3 m cable for remote temperature measurement. Based on the DS18B20 sensor element, it provides single-point digital temperature readings suitable for indoor and outdoor monitoring when connected to compatible Shelly devices or controllers. Ideal for HVAC, aquariums, refrigerators, greenhouses and general temperature monitoring; easy to install and resistant to typical environmental conditions.

## Long description

Wired temperature sensor Shelly DS18B20 with 3 m cable provides single-point digital temperature readings using the DS18B20 sensor element. Designed for connection to compatible Shelly devices and other controllers that accept a DS18B20 sensor, this probe enables remote temperature monitoring in a compact, cable-mounted form factor. The 3 m cable allows flexible placement in systems where the primary controller is at a distance from the measurement point. The sensor is suitable for indoor and sheltered outdoor use when protected from direct water ingress and extreme mechanical stress.
Advantages
The Shelly DS18B20 sensor delivers accurate digital temperature measurements with simple wiring and reliable communication over the sensor interface. Its 3 m cable provides reach for installation in HVAC systems, enclosures, appliances, or small environmental zones. Being based on the DS18B20 element ensures compatibility with a wide range of controllers and predictable thermal performance across typical ambient temperature ranges. The probe’s compact tip and flexible cable make it straightforward to position within ducts, tanks, or confined spaces while minimizing installation complexity.
Suitable for
 HVAC temperature monitoring and control
 Aquarium and terrarium temperature measurement
 Refrigerators, freezers and cold storage monitoring
 Greenhouse or small-scale agricultural temperature sensing
 Embedded projects and controllers compatible with DS18B20
Key specifications
 Sensor type: DS18B20 digital temperature sensor element
 Cable length: 3 meters, flexible insulated lead
 Measurement range: typical DS18B20 operational range (-55°C to +125°C) with best accuracy within common ambient ranges
 Resolution: up to 12-bit conversion (device-dependent when used with compatible controller)
 Interface: single-wire digital bus compatible with DS18B20 protocol
 Probe form factor: sealed probe tip with attached cable for remote placement
How to use
Connect the Shelly DS18B20 sensor to a compatible Shelly device or controller following the controller’s wiring diagram for a DS18B20 probe: attach the data lead to the designated sensor input, and connect power and ground as required by the host device. Place the probe tip at the measurement point and secure the cable to avoid strain on the sensor connection. After wiring, configure the host device to read temperature from the DS18B20 input and select the appropriate resolution or sampling interval as supported by the controller. Verify readings in the host’s interface and allow a short stabilization period after placement to ensure accurate measurement.
Usage recommendations
For reliable long-term performance, avoid exposing the cable junction or probe tip to direct immersion in open water unless the host’s documentation specifies suitability for submersion. Route the cable away from strong heat sources or moving parts, and secure it to prevent mechanical strain. When used outdoors or in humid environments, provide additional protection (for example, a protective sleeve or conduit) at the cable entry points. Calibrate and verify readings within the host system when precise temperature control is required.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Shelly products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Shelly service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

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