Take full control of your aquatic ecosystem with the Jeff-I Controller. We've combined the power of the ESP32-S3 (Dual-core 240MHz) with a custom-designed PCB to create the ultimate all-in-one solution for high-tech planted tanks and reef keepers. Key Specs & Features: Automated Water Change (AWC): Configurable drain/fill times with smart siphon support. DS18B20 Temp Monitoring: 0.5°C precision with non-blocking asynchronous reading. Dual Expansion Ports: Control AC fans, UV sterilizers, or air