Replacement Temp / Humidity / Light Sensor for Hydro-X

Restore Accurate Sensing With a Drop-In Replacement Sensor

A damaged or lost sensor shouldn't require replacing the entire controller, and TrolMaster sells this exact part specifically so it doesn't have to. This MBS-TH sensor is a replacement part for the 3-in-1 temperature, humidity, and light sensor that ships standard with Hydro-X controllers, useful if the original sensor is damaged or a spare is wanted on hand.

A built-in photocell automatically distinguishes day from night conditions, and the sensor connects to the controller using the included RJ12 cable and T-splitter.

Key Features & Benefits

• 3-in-1 Sensing — measures temperature, humidity, and light from one sensor body.
• Built-In Photocell — automatically detects day and night conditions.
• RJ12 Cable and T-Splitter Included — arrives ready to connect to a Hydro-X controller out of the box.
• Drop-In Replacement — matches the sensor that ships standard with Hydro-X controllers.

Who Should Use This Replacement Sensor

Growers whose original Hydro-X sensor has failed, or who want a spare sensor ready for a second controller, should pick up this MBS-TH replacement. It's a like-for-like swap, not an upgraded or different sensor type.

About TrolMaster

TrolMaster stocks standalone replacement parts like the MBS-TH so a single failed component doesn't force a full controller replacement, a practical policy from the Sacramento, California company for hardware that sees years of continuous grow-room use. Ordering this part only makes sense for an existing sensor failure or a second controller setup.

Frequently Asked Questions

Do I need this if I already have a Hydro-X controller?

Only if the included sensor needs replacing or a second controller is being added. One sensor ships standard with every Hydro-X controller already.

How do I install this replacement sensor?

Connect it to the controller with the included RJ12 cable and T-splitter in place of the original sensor. No additional configuration is needed beyond that physical swap.

What does the photocell do?

It automatically detects day versus night conditions for the controller's lighting schedule logic. No manual mode switching is required.

What's included with the sensor?

An RJ12 connection cable and a T-splitter, ready to install on a controller. No additional hardware needs to be sourced separately.

Does this sensor measure CO2?

No, this is a 3-in-1 sensor for temperature, humidity, and light only. CO2 sensing requires a separate MBS-series sensor.