2 Relay Module 10A / 250V - Opto-Insulated Input

2 pcs. Relay Module 5V - max. load 10A / 250V - 5V logic level

4 Relay Module 10A / 250V Opto-Isolated Inputs 3-24V

12V 1 Channel Relay Module With OPTO Isolation High Low Level Trigger

3 x ESP-01 Relay Module for ESP8266 10A 250V max.

WIFI Relay Module ESP8266 IOT APP Controller 5/12V 2-Channel For Smart Home

NE555 DC 12V Delay Relay shield Timer Switch Adjustable Module 0 To 10 Second

SSR-25DA SSR-40DA SSR-60DA 25A/40A/60A 250V Solid Relay Module Heat Sink Sweet