2X ESP8266 WIFI 16 Channel Relay Module ESP-12F Development Board Power, 16 Way Relay Module, Supply

Feature Highlights: 1. Dual ESP-12F WiFi Modules – Each board comes with a stable ESP-12F WiFi module and 4MB flash memory, ensuring reliable connectivity and ample storage for your projects. 2. Easy to Expand & Customize – All I/O ports and UART program download ports are accessible, making secondary development straightforward and flexible. 3. Wide Power Compatibility – Supports DC 12V power input, with a reset button and a programmable button onboard for convenient operation. 4. High-Capacity Relay Control – Features 16 channels of 24V/10A relays, suitable for controlling loads within AC 250V or DC 30V. Each channel outputs a switch signal for safe and efficient device management. 5. User-Friendly Design – Includes a power indicator, relay status lights, and an onboard LED. Two 74HC595 shift registers simplify relay control via cascaded programming, with reference code provided for quick setup. Product Details: This development board integrates an ESP-12F WiFi module with 4MB flash, ideal for IoT and automation projects. It supports programming via Eclipse or Arduino IDE, with example code available for the Arduino environment. The relay outputs include NC (normally closed) and NO (normally open) terminals for flexible wiring. Downloading firmware is easy using an external TTL module—connect GND, RX, TX, and 3.3V, then ground IO0 during upload. Made from durable green plastic, this board is built for both prototyping and long-term use. Specifications: - Color: Green - Material: Plastic - Relay: 16-channel, 24V/10A - WiFi Module: ESP-12F with 4MB flash - Power Supply: DC 12V - Included: 2 x Development Board Package Contents: 2 x Development Board Only the listed items are included. Please note: slight color variations may occur due to lighting or screen settings, and product dimensions may have a tolerance of +/- 1–3 cm.