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Keywords you may need: Sensors Modules Esp8266 Board R3&ATMEGA2560 NodeMCU Sheild Screw sheild Nano Sheild Relay Temperature Controller Displays OLED LED&RGB LCR Amplifier Power supply Step Up Step down Converter Switch GPS Light Wireless/Wifi Dear customer: Thank you for visit our store,we are proffessional "Business & Industrie" seller for 10 years,our main products included:Sensors,modules devolpment board, LED displays, other IC procuts an so on,any question about DIY robot,Arduino,or Raspberry Pi will be welcome to discuss with us,we will try our best to supply the most advanced product and price,(if we sale more,the cost of made one product will be reduce and we will change or price to make you save more. Hope you enjoying yourself here! We appreciate your business! Shipping Payment Refund Feedback Shipping We will arrange shipping for you within 24 Hours after payment cleared except the holidays. We only ship to the confirmed address provided by PayPal. Before you pay, please make sure your address in PayPal matches the address you would like us to ship to. If not, please let us know before we sent you the package, or we will not be responsible for any loss. hope you could understand. -We ship items to Worldwide. Thank you! -we will ship out the order in 1-2 business days after payment cleared .Since it is international shipping ,delivery time is about 15--28 business days to arrive to most countries. Payment We accept PayPal payment ONLY. Refund * We believe our items are so outstanding. We are convinced you will be happy with your Purchase. * If you do not satisfy with our items. Please simply return to us within 30 Days in original condition. Just pay for the returned postage. Then we can issue full refund to you after the returned item arrived at our warehouse. * Please include your eBay ID and item number with any email requests. Feedback * When you satisfied with our product and services please leave us positive feedback. * If you have got the package, please confirm " Delivery on time " For us. * If a problem occurs, contact us immediately with any email request. * Just contact us using the " Ask the seller a question" link on eBay. ESP8266 WiFi ESP-01 4-Channel Relay Module 12V For IOT Smart Home Mobile APP Description: The 5V dual WiFi relay module uses ESP-01 as the WiFi module and is compatible with 8 bit MCU chip. Just a simple configuration process that can achieve wireless 2-way relay control using the mobile phone APP. Function: 1. Onboard ESP-01 WiFi modules and high performance microprocessor STM8S103. 2 the module has 2 working modes: Mode 1: mobile phone is mounted directly on WiFi module. Mode 2: mobile phones and WiFi modules are equipped on routers simultaneously Additional function: it can also be used as a USB relay when ESP-01 is pulled out. 3. Transmission distance: In an open environment, the maximum stable transmission distance is 100 m when the mobile phone is mounted on the WiFi module. 4. When the WiFi module and mobile phone are held on the router at the same time, the transmission distance depends on the signal strength of the router. 5. on board 12 v, 10A / 250 v AC 10A // 30 v DC relay, which can be continuously pulled for 100 thousand times, has diode protection against discharges, short response time. 6. The use of Smartcongig technology in the mobile phone on APP ESP-01 WiFi module to complete the account and password configuration, memory function configured the user name and password. 7. Real-time mode selection tab and work status indicator. 8. reserved UART debugging interface and STM8 of NUOTATA download interface program. 9. the dimensions of the card: 59 * 40mm. Package Included: 1 x 12V ESP8266 ESP-01 4-Channel WiFi Relay Module Am 02.07.20 hat der Verkäufer die folgenden Angaben hinzugefügt: