TEMP-1 Temperature Sensor for Home Assistant

The Apollo Automation TEMP-1 delivers accurate and reliable temperature readings with multiple probe options (probes sold separately). Built-in WiFi and Bluetooth connectivity ensure easy smart home integration and automation, designed for seamless integration with ESPHome and Home Assistant via WiFi.

An onboard RGB LED and buzzer provide real-time alerts, while the AHT20-F sensor measures ambient air temperature alongside probe readings.

A 3.5mm jack supports an optional temperature probe or a food-safe probe (sold separately), allowing customisation for specific monitoring needs. Its compact and durable design ensures seamless integration into any environment while maintaining high performance.

As part of Apollo Automation’s commitment to open-source innovation, the TEMP-1 is built for maximum flexibility and reliability. Whether you choose the USB-C or battery-powered model, it offers a powerful combination of functionality, privacy, and precision for all your temperature monitoring needs.

USB-C cable/power supply not included. Batteries not included. Probes not included.

Two versions available

The TEMP-1 is available in two different variants – please select an option before adding to your cart:

• TEMP-1: A USB-C powered model for continuous operation
• TEMP-1B: A battery-powered model for flexible placement, which accommodates a rechargeable RC-CR123A or 16340 battery (not included). This version enables cable-free operation, making it ideal for locations without constant power

Use Cases

• Food Safety Monitoring
  • Fridge/Freezer Monitoring: Ensure your fridge or freezer maintains safe temperatures for food storage. The flat cable probe can fit through seals without interfering with the door closure.
  • Cooking and Baking: Use the food-safe stainless steel probe to monitor grilling, roasting, or baking temperatures in real-time.
• Aquatic Environments
  • Fish Tank Monitoring: Keep a close eye on aquarium water temperatures with the waterproof probe to maintain a stable and healthy environment for aquatic life.
  • Pool and Hot Tub Monitoring: Track water temperatures in pools or hot tubs (with waterproof housing) for safety and comfort.
• Home and Building Automation
  • Attic Fan Control: Automate attic fans to turn on when temperatures rise above a set threshold, improving ventilation and energy efficiency.
  • HVAC System Monitoring: Monitor ambient temperature to optimize your heating, ventilation, and air conditioning system’s performance.
• Outdoor and Remote Applications
  • Greenhouse Temperature Management: Maintain the perfect growing environment for plants in a greenhouse, even in remote areas, using the battery-powered version.
  • Remote Monitoring: Monitor temperature in locations without constant power, such as sheds, barns, or outdoor storage units.
• General Environmental Monitoring
  • Room Temperature Tracking: Use the onboard AHT sensor to monitor indoor environments for comfort and energy efficiency.
  • Cold Storage Units: Monitor temperature in commercial or residential cold storage units to ensure proper operation.
• Safety Alerts
  • Overheat Detection: Use the buzzer or Home Assistant integration to trigger alerts when temperatures exceed safe levels in critical areas like server rooms or electronics enclosures.

Community Reviews

• Simon Says Home Assistant TEMP-1 Review
• Digiblur DIY TEMP-1 Review
• Smart Home Scene TEMP-1 Review
• Smart Home Solver TEMP-1 Review
• Michael Leen TEMP-1 Review

Resources

Documentation

• Apollo Automation TEMP-1 Wiki
• Apollo Automation TEMP-1B Wiki
• TEMP-1 GitHub Repo

3D Print Files

• 3D Case Files (both versions)
• TEMP-1 Temperature Probe mount

Apollo Automation Social

• Discord
• Twitter
• Facebook
• Instagram
• TikTok

Package Contents

• 1x Assembled TEMP-1 sensor with 3D-printed case
  • Select a variant before adding to cart – either the standard TEMP-1 (USB-C) or the TEMP-1B (battery version)

USB-C cable/power supply not included. Batteries not included.