4-Channel 12V DC Switch Board with Optocoupler Isolation for Prototypes

12V 4-Channel Optocoupler Isolated Switch Module for Electronic Development

24V 8-Channel Control Module with Optocoupler Isolation for Lab and DIY Use

Central Air Conditioner Switch Cover 86 Type Waterproof with Builtin Lock

86 Type Switch Panel Waterproof Cover with Builtin Lock for Wall Installation

4-channel Relay Module Optocoupler Isolation Operating Temperature -40~85°C