# 16 Channel I2C Electromagnetic Relay Module IoT 16 Channel I2C Electromagnetic Relay Module PCF8575 Plexiglass Box for Home Assistant Arduino Raspberry Logic Level 3.3V 5.0V - **Seller:** [Olegs Bugrovs's store](https://lectronz.com/stores/krida_electronics), Riga, Latvia - **Price:** €30.95 (EUR, before shipping and taxes) - **Availability:** In stock - **HS code:** 857400 - **Product page:** https://lectronz.com/products/-16-channel-i2c-electromagnetic-relay-module-iot ## Links - [Documentation](https://drive.google.com/file/d/1sZRVOUzwXhO_q9k4vS1pJ506cUv70Nmc/view?usp=sharing) - [Code](https://drive.google.com/file/d/1sZRVOUzwXhO_q9k4vS1pJ506cUv70Nmc/view?usp=sharing) - [Design Files](https://drive.google.com/file/d/1sZRVOUzwXhO_q9k4vS1pJ506cUv70Nmc/view?usp=sharing) ## Images ![16 Channel I2C Electromagnetic Relay Module IoT](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MjY2ODUsInB1ciI6ImJsb2JfaWQifX0=--780f78bc11601f10c8743ad35947b86e6d566c24/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2022-07-11T05-3A48-3A22.554Z-01.jpg) ![16 Channel I2C Electromagnetic Relay Module IoT](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MjY2ODYsInB1ciI6ImJsb2JfaWQifX0=--d615969cfb4a6ed4efbd08d08ae4b2888ac5da05/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2022-07-11T05-3A48-3A22.554Z-03.jpg) ![16 Channel I2C Electromagnetic Relay Module IoT](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MjY2ODcsInB1ciI6ImJsb2JfaWQifX0=--feb8104c943b66165b80b8aef82f777fd6d64f83/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2022-07-11T05-3A48-3A22.554Z-06.jpg) ![16 Channel I2C Electromagnetic Relay Module IoT](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MjY2ODgsInB1ciI6ImJsb2JfaWQifX0=--67bea3c6df8b8ffb1414113b12ad300f245c0603/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2022-07-11T05-3A48-3A22.554Z-05.jpg) ![16 Channel I2C Electromagnetic Relay Module IoT](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MjY2ODksInB1ciI6ImJsb2JfaWQifX0=--33d0cd55b687d82857595955b8ec9b1daca92eff/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2022-07-11T05-3A48-3A22.554Z-08.jpg) ![16 Channel I2C Electromagnetic Relay Module IoT](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MjY2OTAsInB1ciI6ImJsb2JfaWQifX0=--e748380281ffca30c260640f2c98e1537055fb01/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2022-07-11T05-3A48-3A22.554Z-07.jpg) ![16 Channel I2C Electromagnetic Relay Module IoT](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MjY2OTEsInB1ciI6ImJsb2JfaWQifX0=--edabf9063b071c5c5e5435d815fff3ba949ac319/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2022-07-11T05-3A48-3A22.554Z-09.jpg) ![16 Channel I2C Electromagnetic Relay Module IoT](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MjY2OTIsInB1ciI6ImJsb2JfaWQifX0=--21c3d678e890664c8933cb402f1659ad1ecbcfff/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2022-07-11T05-3A48-3A22.554Z-10.jpg) ![16 Channel I2C Electromagnetic Relay Module IoT](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MjY2OTMsInB1ciI6ImJsb2JfaWQifX0=--bc9256543d0ec1e293734555806f015e2180bf26/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2022-07-11T05-3A48-3A22.554Z-04.jpg) ![16 Channel I2C Electromagnetic Relay Module IoT](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MjY2OTQsInB1ciI6ImJsb2JfaWQifX0=--27ffafab6d77b9336cb11976fd5b1c0ce5fe229e/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2022-07-11T05-3A48-3A22.554Z-11.jpg) ## Description Device specification : - Board comes fully assembled! - PCB board dimension 135mm x 150mm - Operation DC voltage – 3.3V and 5.0V - Maximum current @5.0V – 1500mA - Maximum current per relay – 5A...10A @ different voltages - LEDs indicators for each electromagnetic relay channel - Relays with SPDT switch contacts: Normally Open, Common, Normally Closed - Relay contact resistance 100 milliohms max. ( initial value ) - Relay insulation resistance 100 MOhm min. (DC 500V) - Relay operation time 8 ms max - Relay release time 5ms max - Relay dielectric strength 750 VAC, 50/60Hz between contact - Relay dielectric strength 1,500 VAC, 50/60Hz between all elements - Relay expected life Mechanical - 10,000,000 operations min. - Relay expected life Electrical - 100,000 operations min. at rated load - Working temperature range - 25 C ~ + 80 C - Each board can be assigned an I2C address between 0x20...0x27 by the DIP switch - The module contains an **PCF8575** chip - The logic power supply voltage should match the voltage levels on the I2C bus. The SDA and SCL lines are pulled up to VDD with 5.6k resistors on the relay module. - Up to 8 boards can be connected to each I2C bus. 8 x 16 = 128 relays can be controlled via 4 wires! - Depending on the relay stock available, the relay manufacturer may differ --- HOME ASSISTANT: - [https://github.com/krida0electronics/16ch_pcf8575_hass](https://github.com/krida0electronics/16ch_pcf8575_hass) ![HASS](https://raw.githubusercontent.com/krida0electronics/16ch_pcf8575_hass/main/01.jpg "enter image title here") --- Arduino sample codes: - Arduino sample code for 0x27 slave address, *ino - [download here](https://drive.google.com/file/d/1xKIb6WCDcsQN3GGts6FjargqOoedlfmV/view?usp=sharing) - Arduino sample code for 0x27 slave address, *txt - [watch here](https://drive.google.com/file/d/1sZRVOUzwXhO_q9k4vS1pJ506cUv70Nmc/view?usp=sharing) - Multiboards code, *txt - [watch here](https://drive.google.com/file/d/1goVHewhT9ai6FEoXpaIuBDYGeCQxb94P/view?usp=sharing) --- Arduino PCF8575 library *zip - [download here](https://drive.google.com/file/d/1lfBwYUwKWrRbaP0a2h-QxCAIFHa-xpHH/view?usp=sharing) --- Shipping information: - Worldwide shipping with/without tracking number. - Please track your tracking number at 17track.net or track-trace.com. - Dispatching next business day. - Estimated delivery time to Europe 14-28 business days, others countries up to 30 days. - For express shipping please contact before order Free contact me, if you have any question !