GX18B20H Industrial Grade Temperature Probe
📌 Product Overview
The GX18B20H digital temperature probe supports 9 to 12-bit temperature resolution and programmable non-volatile memory for upper and lower temperature limit alarm settings. It adopts single-wire communication protocol, only requiring one signal line and one ground wire to communicate with host MCU. The measuring temperature range is -55℃ to 125℃, and the measuring accuracy can reach ±0.1℃ within 0℃~50℃. It supports parasitic power supply mode, which can be powered directly through signal wire without extra power supply. Each sensor has a unique 64-bit serial number, enabling multiple probes connected on the same single bus, one controller can read multi-point distributed temperature data. It features high ESD protection performance, widely used in cold chain storage, grain monitoring, industrial process control, BMS and high-precision temperature measurement projects.
✨ Core Features
- Single-bus interface, only one IO pin required for communication
- Unique 64-bit serial number for each probe, support multi-point networking measurement
- Parasitic power supply available, supply voltage: 2.5V~5.5V
- Temperature range: -55℃ ~ 125℃
- High precision: ±0.1℃ accuracy within 0℃~50℃
- Selectable resolution: 9~12 bits, max 12-bit conversion time<750ms
- User-defined non-volatile temperature alarm threshold
- Strong ESD protection: HBM 8000V, MM 800V
- Stainless steel metal probe, white silicone cable, multiple cable length optional
📋 Product Parameters
| Parameter |
Spec |
| Model |
GX18B20H |
| Communication |
Single-wire |
| Supply Voltage |
2.5V ~ 5.5V |
| Temperature Range |
-55℃ ~ 125℃ |
| Accuracy |
±0.1℃ (0℃~50℃) |
| Resolution |
9~12 bit adjustable |
| ESD Protection |
HBM 8000V, MM 800V |
| Cable Option |
1m / 2m / 3m |
📐 Dimension Info Probe size: 6X50mm Cable length optional: 1m(22.3g), 2m(43g), 3m(62g)
⚠ Important Notes
- Do not bend the metal probe violently to avoid internal chip damage.
- Keep the wire away from high voltage strong interference cable to prevent signal loss.
- When using parasitic power mode, ensure stable signal line drive capability.
- Do not exceed the maximum operating temperature range.
🛠 Application Scenarios Medical & pharmaceutical cold chain monitoring, grain warehouse temperature detection, tobacco curing and fermentation monitoring, HVAC and industrial process control, laboratory constant temperature equipment, battery BMS temperature collection, server room hotspot detection, smart home appliance temperature control.