Key Features Supports 3.3V / 5V / 12V / 24V control voltage versions (selectable model options) Built-in optocoupler isolation for safe signal separation and anti-interference High load capacity: AC 250V / 10A, DC 30V / 10A Low trigger current: only 5mA required Fault-tolerant design keeps relay OFF when control line is disconnected Dual LED indicators: Green: Power status Red: Relay working status Standard terminal interface for easy wiring and installation Technical Specifications Channel: 1 Channel Relay Module Control Voltage Options: 3.3V / 5V / 12V / 24V (model dependent) Trigger Mode: Low-level trigger Isolation: Optocoupler isolation Output Rating: AC: 250V / 10A DC: 30V / 10A Trigger Current: ~5mA Interface Type: Screw terminal + pin header Interface Description Control Side DC+ : Power supply positive (match selected voltage version) DC- : Power supply ground IN : Signal input (low-level trigger, active LOW) Relay Output Side NO : Normally Open (open before trigger, closed after activation) COM : Common terminal NC : Normally Closed (closed before trigger, open after activation) Applications Arduino / Raspberry Pi / ESP32 automation projects Smart home control systems Motor / light / pump switching DIY electronics and industrial control IoT relay switching applications Package Includes 1 × BESTEP 1-Channel Relay Module (selected voltage version)
