![TrolMaster Hydro-x Smoke Detector w/RJ12 splitter & 16' Cable - HydroPros](http://hydropros.com/cdn/shop/files/RJ12-splitter-_-16_-Cable-HP-ECOMMERCE-LLC-104924418_700x700.jpg?v=1722021150)
The optional Smoke Detector (MBS-SD) can alert the user to smoke within their growing area at ALL TIMES. Up to 5 smoke detectors can be connected to a single Hydro-x controller. If ANY of the smoke detectors determine there is smoke in the area, the user will receive a user-alert on their phone to alert them to the potential problem BEFORE the problem gets out of hand.