PSF-B-2C Ultra Low Power ESP8285 Wi-Fi Switch Module - Smart Home IoT Relay, 2-Channel Wireless Control, Works with Alexa/Google Home, Compatible with eWeLink App, DIY Automation

🚀 Next-Gen ESP8285 Technology

• Ultra-low-power Wi-Fi chipset for energy-efficient 24/7 operation

• Industry-leading power efficiency (50% lower consumption than standard modules)

• Compact SMD packaging for space-constrained installations

🎛️ 4-Gang Smart Control

• Independently control 4 devices/appliances (lights, motors, HVAC)

• Dual control modes:
  ✅ Physical button operation
  ✅ Remote control via eWeLink app (iOS/Android)

• Group/scene creation for synchronized device control

🌐 IoT-Optimized Design

• Smallest form factor in its class (35×25×15mm)

• Seamless Wi-Fi connectivity:

  • Remote access worldwide

  • Local network control (LAN mode)

• Open API for custom smart home integrations

🏭 Industrial-Grade Applications

• Smart Home: Lighting, curtains, appliances

• Industrial IoT: Equipment control, sensors

• Energy Management: Smart grid devices

• Transportation: Fleet monitoring systems

• Retail: Display/signage control

📦 Flexible Deployment Options

• DIN rail mount for electrical cabinets

• Wall-mounted enclosures available

• PCB integration for OEM products
  
  

  Key Features:

  • Built-in 32bit MCU, and can double as an application processor
  • Support wireless 802.11 b/g/n standard
  • Wi-Fi @2.4 GHz, support WPA/WPA2 security mode
  • +20.5dBm maximum output power in 802.11b mode
  • Support device button control and Wi-Fi remote control a)In the normal state: click the button (IO0 pulls down for more than 100ms) to control the relay on and off (IO12 output high/low level

  b)In the pairing mode: click the button to exit the pairing mode.

  • Support timer schedule – including single, count down, repeat, and loop timer, see details in 4.5.
  • Support compatible pairing mode /quick pairing mode
  • Power-on status -The power-on switch status can be configured on or off through the APP, and the default power-on status is off.
  • Support OTA upgrade

  Electrical Characteristics

  1.Rated parameters

  • Conditions: VDD=3.3V±10% , GND=0V; test at room temperature 25°C.
  • Operating Voltage: 2.7V~3.6V
  • GPIO drive capability: Max: 12mA
  • Working current: Average current: ≈80mA ,
  • Maximum working current: 210mA
  • Standby: <200uA
  • Operating temperature: 0℃~45℃
  • Storage condition: Temperature: -10℃~75℃ ,
  • Relative humidity: 20%RH~80%RH
  • Wireless network type: STA/AP/STA+AP
  • Encryption mechanism: WEP/WPA-PSK/WPA2-PSK
  • Encryption type: WEP64/WEP128/TKIP/AES
  • Firmware upgrade:OTA remote upgrade

  2. Wi-Fi parameters

  • Conditions: VDD=3.3V±10% , GND=0V ; test at room temperature 25°C.
  • Wireless standard: IEEE 802.11b/g/n
  • Frequency range: 2.412GHz-2.484GHz
  • Transmit power:
  • 802.11b: 20±2dBm (@11Mbps)
  • 802.11g: 17±2dBm (@54Mbps)
  • 802.11n: 14±2dBm (@HT 20, MCS 7)
  • Receiving sensitivity:
  • 802.11b: -91 dBm (@11 Mbps, CCK)
  • 802.11g: -75 dBm (@54Mbps, OFDM)
  • 802.11n: -72 dBm (MCS7)
  • Antenna type:Ceramic patch antenna

  Tips: If you want to know detailed product features, WIFI radio frequency marking, PCB design, package information, module type and pin definition, please see the product application guide.
  Single Gang:https://itead.cc/diy-kits-guides/psf-b01-application-guide/
  Multi-Gang: https://itead.cc/diy-kits-guides/psf-b04-application-guide/