Apollo TEMP-1 - USB-C Connected Temperature Sensor for Home Assistant

Introduction

The TEMP-1 ofApollo Automation Redefines smart temperature monitoring by combining embedded sensors and external probes in a compact format powered by USB-C. This revolutionary solution, certified "Works With Home Assistant," integrates natively via ESPHome for local control without cloud dependency.

Designed for permanent installations requiring continuous monitoring, the TEMP-1 USB-C excels in critical applications where energy reliability is paramount. Its open-source approach ensures complete transparency with access to YAML files, 3D plans, and active community support via Discord. This philosophy allows for extensive customization while maintaining a plug-and-play configuration for Home Assistant users.

The device transforms traditional monitoring into a multimodal alert system, combining measurement precision and automated responsiveness to create an intelligent and scalable home surveillance ecosystem.

Key Functions

Multi-Sensor Surveillance System

• Embedded sensor AHT20-F : Simultaneous ambient temperature/humidity measurement with dust protection
• External probe interface : 3.5mm jack compatible with waterproof DS18B20 probes and food-grade NTC probes
• High temperature monitoring : Stainless steel food-grade probe up to 350°C for professional culinary applications
• Submersible measures : Flat waterproof probes 20cm and 1.5m for refrigerators, pools, aquariums

Intelligent Alert System

• Programmable RGB LED : Customizable visual signaling (colors, patterns, intensity)
• Piezo musical buzzer : RTTTL sound alerts with complex melodies and volume control
• Real-time notifications : Automatic triggering on configurable temperature thresholds
• Integration automations : Home Assistant actions based on sensor readings and probes

Connectivity and Configuration

• Native ESPHome integration : Instant Home Assistant auto-discovery without manual configuration
• Pre-flashed firmware : Immediate deployment via integrated WiFi hotspot192.168.4.1I am trained on data up to October 2023.
• OTA update : Firmware updates over-the-air via ESPHome Device Builder
• API locale : Local data processing, respect for confidentiality, no mandatory cloud

Technical Specifications

Hardware Architecture

• Microcontroller : ESP32-C3-MINI-1 high performance with integrated WiFi/Bluetooth
• Food : USB-C 5V DC, consumption ≤5W for continuous operation
• Connectivity : WiFi 802.11 b/g/n, Bluetooth support, native ESPHome API
• Dimensions : 48mm × 30mm × 14mm (compact size for discreet installation)
• Enclosure : Professional 3D design with optimized ventilation, STL files available

Sensor Specifications

• Main sensor : AHT20-F temperature (-40°C to +80°C) and humidity (0-100% RH)
• Embedded precision : ±0.3°C (recommended calibration offset for thermal ESP32)
• Compatible probes : DS18B20 (-55°C to +85°C, ±0.5°C), food-grade NTC (up to 350°C)
• Probe interface : Jack 3.5mm automatic switching Dallas/Food, hot-swap supported

Home Assistant Integration

• Exposed entities : Ambient temperature/humidity, probe temperature, LED/buzzer control
• Advanced configuration : Temperature offsets, min/max thresholds, probe type selection
• Automations : Event triggers, conditional actions, custom alerts
• Compatibility : ESPHome, optional MQTT, Bluetooth proxy for network extension

Accessories and Options

• Magnetic support : Attachment of neodymium magnets on metallic surfaces (optional)
• External probes : Waterproof 20cm/1.5m, stainless steel food-grade 1m (sold separately)
• Limitations : Indoor use only, ventilation required, probes sold separately