GTIWUNG 4 Pack 2 Channel 5V Relay Module, 2 Channel 5V Relay with Optocoupler, High or Low Level Trigger, Expansion Board for Raspberry Pi Arduino
NOYITO DC Control 4-Channel FET Module MOS Electronic Switch Control Board Output Controlled Voltage 5V-36V 5A Input Output Completely Isolated
HALJIA 3PCS 4 Channel Relay Module - 5V Relay Board MCU Expansion Board Universal Control Board with Optocoupler Compatible with R3 MEGA2560 Project 1280 DSP ARM PIC AVR STM32 Raspberry Pi
SECURE H3747 - 4 CHANNEL SMART PROGRAMMABLE STAT & WIFI EXTENDER HC2.4 CARD
sourcing map Heater Film Heating Plate, 4.2W 5V Polyimide Heat Pad, Adhesive PI Heater Elements Film 47mmx37mm Heater Strip for Constant Temperature, Pack of 5
sourcing map 2pcs Heater Film Heating Plate, 4.2W 5V Adhesive Polyimide Heat Pad Heating Elements Film 47mmx37mm Heater Strip for Constant Temperature