{"id":468020,"date":"2026-06-07T23:15:37","date_gmt":"2026-06-07T20:15:37","guid":{"rendered":"https:\/\/samama.qa\/?post_type=product&#038;p=468020"},"modified":"2026-06-23T20:58:06","modified_gmt":"2026-06-23T17:58:06","slug":"5v-12v-esp8266-bluetooth-compatible-relay-module-1-2-4-way-channel-iot-things-smart-home-mobile-phone-app-remote-control-switch","status":"publish","type":"product","link":"https:\/\/samama.qa\/en\/product\/5v-12v-esp8266-bluetooth-compatible-relay-module-1-2-4-way-channel-iot-things-smart-home-mobile-phone-app-remote-control-switch\/","title":{"rendered":"5V\/12V ESP8266 Bluetooth-compatible Relay Module 1 2 4 Way Channel IoT Things Smart Home Mobile Phone APP Remote Control Switch"},"content":{"rendered":"<div class=\"product-specs-list-container\">\n<ul class=\"product-specs-list util-clearfix\">\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">Brand Name:&nbsp;<\/span><span class=\"property-desc line-limit-length\">EC Buying<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">Origin:&nbsp;<\/span><span class=\"property-desc line-limit-length\">Mainland China<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">High-concerned chemical:&nbsp;<\/span><span class=\"property-desc line-limit-length\">None<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">Condition:&nbsp;<\/span><span class=\"property-desc line-limit-length\">New<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">Type:&nbsp;<\/span><span class=\"property-desc line-limit-length\">Voltage Regulator<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">Supply Voltage:&nbsp;<\/span><span class=\"property-desc line-limit-length\">DC12V DC 12V 5V DC5V<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">Dissipation Power:&nbsp;<\/span><span class=\"property-desc line-limit-length\">low<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">is_customized:&nbsp;<\/span><span class=\"property-desc line-limit-length\">Yes<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">Operating Temperature:&nbsp;<\/span><span class=\"property-desc line-limit-length\">normal<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">Application:&nbsp;<\/span><span class=\"property-desc line-limit-length\">Computer<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">Package:&nbsp;<\/span><span class=\"property-desc line-limit-length\">Module<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">Smart Electronics Experiment:&nbsp;<\/span><span class=\"property-desc line-limit-length\">Switch And Sensor For Arduino STM32<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">ESP8266 12V WiFi Bluetooth-compatible Ble Relay Module:&nbsp;<\/span><span class=\"property-desc line-limit-length\">1 2 4 Way Channel Wireless Things Smart Home Remote Control Switch Mobile Phone<\/span>\n                            <\/li>\n<li class=\"product-prop line-limit-length\"><span class=\"property-title\">5V 12V Relay Module ESP8266 for Bluetooth-compatible:&nbsp;<\/span><span class=\"property-desc line-limit-length\">Relay Module Internet of Things Smart Home Mobile APP Remote Control Switch 1 Channel<\/span>\n                            <\/li>\n<\/ul><\/div>\n<div class=\"detailmodule_html\">\n<div class=\"detail-desc-decorate-richtext\">\n<div align=\"center\" style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/samama.qa\/wp-content\/uploads\/2026\/06\/kf-Sffd575b8cd0948d997118e78ed935a76k.webp\"><\/div>\n<div><strong><span style=\"font-size:20px\"><span style=\", times, serif\">Product introduction:<\/span><\/span><\/strong><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Bluetooth-compatible relay module Android phone wireless remote control switch<\/span><\/span><\/div>\n<div><strong><span style=\"font-size:20px\"><span style=\", times, serif\">Product parameter:<\/span><\/span><\/strong><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">1. Onboard module: Onboard SPP_C Bluetooth-compatible serial slave module,<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">2. With wireless control function<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">3. Onboard relay: 12V, 10A\/250V AC, 10A\/30V DC relay, long relay life, can be continuously pulled in 100,000 times<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">4. Diode efflux protection: with diode efflux protection, short response time<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">5. On-board indicator: Bluetooth-compatible status indicator (slow flashing when not connected, long light after connection) and relay status indicator (lights up after closing)<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">6. Control distance: 10m (open environment)<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">7. Follow the specification: follow the Bluetooth-compatible 2.1 +EDR specification<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">8. Working voltage: DC 12V<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">9. DC control maximum voltage: DC 30V<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">10. Maximum voltage for AC control: AC 250V<\/span><\/span><\/div>\n<div><strong><span style=\"font-size:20px\"><span style=\", times, serif\">Interface introduction:<\/span><\/span><\/strong><\/div>\n<div><span><strong><span style=\"font-size:20px\"><span style=\", times, serif\">1 Way&nbsp;Bluetooth-compatible Relay Mdoule<\/span><\/span><\/strong><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">IN+: input positive<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">IN-: input negative<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NC: Relay normally closed 0<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">N0: Relay normally open interface<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">COM: public<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Open relay command: A0 01 01 A2 (sent in hexadecimal)<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Close relay command: A0 01 00 A1 (sent in 16 hex)<\/span><\/span><\/div>\n<div align=\"center\" style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/samama.qa\/wp-content\/uploads\/2026\/06\/kf-HTB1xVzLOhTpK1RjSZFKq6y2wXXa6.webp\" style=\"font-size:12px\"><\/div>\n<div><span style=\"font-size:13.3333px\"><span style=\"font-size:20px\"><span style=\", times, serif\"><span><strong>2Way&nbsp;Bluetooth-compatible Relay Mdoule<\/strong><\/span><\/span><\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">IN+, IN-: 12V power input<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">TX, RX: UART serial port pins<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">EV, GND, SWIM, NRST: STM8S microcontroller program download port<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">LED D2 and D4 (red light): relay working indicator, light when open<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">LED D1 (blue light): blue light status indicator, slow flashing indicates waiting to establish connection with mobile phone, steady on indicates successful connection establishment with mobile phone<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Two jumper caps are reserved: please plug to the right end during normal use (ie RX to RX1, TX to TX1). If you want to use the USB-TTL serial port module to debug the SPP-C module, please plug to the left end (otherwise Interfering)<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">COM1, COM2: public terminal<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NO1: Normally open, the relay hangs before pull-in, short-circuit with COM1 after pull-in<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NC1: Normally closed end, the relay pull-in is short-circuited with COM1, and hangs up after pull-in<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NO2: Normally open, the relay hangs before pull-in, short-circuit with COM2 after pull-in<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NC2: Normally closed end, the relay pull-in is short-circuited with COM2, and hangs up after pull-in<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Relay control command (hexadecimal HEX form): turn on the first-way relay: A0 01 01 A2<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Close the second relay: A0 01 00 A1<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Turn on the second relay: A0 02 01 A3<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Close the second relay: A0 02 00 A2<\/span><\/span><\/div>\n<div align=\"center\" style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/samama.qa\/wp-content\/uploads\/2026\/06\/kf-H83fc8edddd24455985ecbc228bbd64e0B.webp\"> <img decoding=\"async\" src=\"https:\/\/samama.qa\/wp-content\/uploads\/2026\/06\/kf-H56b9fa86059b4f459148754966663353b.webp\"><\/div>\n<div><span style=\"font-size:13.3333px\"><strong><span style=\"font-size:20px\"><span style=\", times, serif\">4 Way&nbsp;Bluetooth-compatible Relay Mdoule<\/span><\/span><\/strong><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">IN+, IN-: 12V power input;<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">TX, RX: ART serial port pins;<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">5V, GND, SWIM, NRST: MCU program download port.<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">LED D2\/D3\/D4\/D5 (red light): relay work indicator light, light when open<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">LED D1 (blue light): Bluetooth-compatible status indicator, described as follows:<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">When flashing slowly, it means waiting to establish a connection with the phone;<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">When it is always on, it means a successful connection with the mobile phone.<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Two reserved jumper caps: please plug them to the right end during normal use (i.e. RX connected to RX1, TX connected to TX1)<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">If you want to use the USB to TTL serial port module to debug the SPP-C module alone, please plug it to the left end (otherwise there may be interference).<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">COM1: public terminal;<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NC1: normally closed end, the relay is short-circuited with COM1 before pull-in, and hangs up after pull-in;<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NO1: Normally open, the relay is suspended before pull-in, and shorted to COM1 after pull-in. COM2: public terminal;<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NC2: normally closed end, the relay is short-circuited with COM2 before pull-in, and hangs up after pull-in;<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NO2: Normally open, the relay hangs open before pull-in, and short-circuit with COM2 after pull-in. COM3: public terminal;<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NC3: normally closed end, the relay is short-circuited with COM3 before pull-in, and hangs up after pull-in;<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NO3: Normally open, the relay is suspended before pull-in, and shorted to COM3 after pull-in. COM4: public terminal;<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NC4: Normally closed end, the relay is short-circuited with COM4 before pull-in, and hangs up after pull-in;<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">NO4; normally open, the relay hangs before pull-in, short-circuit with COM4 after pull-in.<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">2 Relay control instructions (16 hex system),<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Turn on the first relay: A0 01 01 A2<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Close the first relay: A0 01 00 A1<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Turn on the second relay: A0 02 01 A3<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Close the first relay: A0 02 00 A2<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Turn on the third relay: A0 03 01 A4<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Close the third relay: A0 03 00 A3<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Turn on the fourth relay: A0 04 01 A5<\/span><\/span><\/div>\n<div><span style=\"font-size:20px\"><span style=\", times, serif\">Close the fourth relay: A0 04 00 A4<\/span><\/span><\/div>\n<div align=\"center\" style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/samama.qa\/wp-content\/uploads\/2026\/06\/kf-Hc5154655afd049469381b26fd93f6b79i.webp\"><\/div>\n<div align=\"center\" style=\"text-align:center\">&nbsp;<\/div>\n<div><span style=\"font-size:20px;, times, serif\">This product has no data sheet and connection diagram, Thanks<\/span><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Brand Name:&nbsp;EC Buying Origin:&nbsp;Mainland China High-concerned chemical:&nbsp;None Condition:&nbsp;New Type:&nbsp;Voltage Regulator Supply Voltage:&nbsp;DC12V DC 12V 5V DC5V Dissipation Power:&nbsp;low is_customized:&nbsp;Yes Operating [&hellip;]<\/p>\n","protected":false},"featured_media":468025,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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