<p>Features: 1. Onboard And Stable ESP07 Wifi Module, Large Capacity 4m Flash</p> <p>2. The I\/0 Port Of The Wifi Module And The Uart Program Download Port Are All Lead Out To Facilitate Secondary Development.</p> <p>3. Onboard Wifi Module Reset Button</p> <p>4. Esp07 Supports The Use Of Development Tools Such As Eclipse\/for Arduinoide And Provides Reference Programs For The for Development Environment.</p> <p>5. Onboard 2 Way 5V Relays, Output Switching Signals, Suitable For Controlling Loads With Working Voltage Within AC250V\/DC 30V, Onboard Power Indicator Light, 1 Programmable Led And Relay Indicator Light</p> <p>Description:</p> <p>Product Name:Relay Module</p> <p>Board Size: About 78 x 47mm</p> <p>Material: PCB</p> <p>colour: As shown</p> <p>Package Contents:</p> <p>1 x Relay Module</p> <p>1 x 6Pin Double Row Pin</p> <p>1 x 8Pin Single Row Of Pins</p> <p>1 x 6Pin Single Row Of Pins</p> <p>3 x Short Circuit Cap</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>