https://alexnld.com/product/tuya-ac-85v-240v-60hz-50hz-16a-rf433mhz-wifi-remote-control-switch-no-battery-self-powered-waterproof-light-switch/?hilite="Camera Battery Charger 100-240V AC 50/60Hz 4.2V DC 200mA for Olympus LI-40B LI-42B SP700"