
Real photo of the Black part.
ATO Sensor Wall Bracket for the Neptune OS-1
This bracket holds the Neptune OS-1 ATO sensor. The OS-1 body measures 12.70mm across. A C shaped channel runs down the bracket. Push the sensor in through the side mouth and slide it up or down to set the level you want. The channel holds 22mm of the body at any height, with 30mm of travel. Two full length rails on the back stand the bracket off a cabinet wall, a sump baffle, or an overflow face, so there is room for the cable behind it. Two screw holes run through the rails. Pick screws that suit your own wall. Screws are not included. These sensors need a different mount. The AutoAqua Smart ATO Micro, Lite G2, and nano are square. The Innovative Marine HydroFill and HydroFill Ti are flat blocks. The XP Aqua Duetto 2 puts two sensors in one housing. The Red Sea ReefATO+ comes on its own magnet bracket. The Tunze 3152.300 and the CoralVue HYDROS float are not covered either. This is a bracket. It holds a sensor at the height you set. This part stays dry in the cabinet. We print it in PETG, a tough plastic. Keep it out of direct sun, since sun wears down any plastic over time.
This is a new product.
- One piece design
Made in the USA
Printed to order
Custom sized
Compatibility
Does not fit
These popular sensors are not round, so no mount here fits them:
- AutoAqua Smart ATO, square block
- Innovative Marine HydroFill and HydroFill Ti, flat block, and its metal pads must stay clear
- XP Aqua Duetto 2, two sensors in one clip housing
- Red Sea ReefATO+, slim probe on a corner bracket
Own one of these? Here is what does work. See the sizes
Need help identifying your setup? Send us a photo.
Snap the label on your gear and the spot the part goes. A person looks at every photo and emails you back.
Send a photoSpecifications and install steps
Specifications
- Material
- PETG
- Colors
- Black, White
- Pieces included
- 1 printed piece
Need a different size?
Pick your sizes in the Custom Builder and we will print it.
Build a custom partSafety
A note on safety
We print every part in PETG. It is the material aquarium keepers have used submerged for years. Rinse each part in clean water before you add it to your tank.
Common questions
Which sensors have a bracket made for them?
Three interfaces: the Neptune OS-1 body, an M16 threaded float switch, and an M10 threaded float switch. Everything else takes the universal bracket, which holds a range of sizes.
How do I mount the bracket, hang it or screw it?
Hang one over the tank or sump wall, or screw one to a cabinet wall. Pick whichever matches where you want the sensor.
What if my sensor is not the Neptune OS-1 or an M16 or M10 float switch?
Each product page names the popular sensors that do not fit, so start with that list. Anything else goes on the universal bracket, which grips a range of body sizes.
Can I adjust the height once the bracket is mounted?
Yes. Every bracket has real travel built in, so the sensor is not stuck at one fixed spot.

