Robo-Tank DIY ATO System
User Manual – Page 15
12. Attaching Plug-able Screw Terminal Connectors to Sensors and DC Pump
Your ATO kit will have 3 x 3 Pin connectors that are for Sensor 1, 2 and 3. These ports will accept Optical sensors, non-
contact sensors, float switches and any other 5v compatible analog sensor. If you have something in mind, contact me so
I can confirm if it will work. Be sure you set the jumpers on the circuit board to match the senor type you use for each
port (see page 7).
Note: 98% of these optical sensors on the market that look like the image below, only have an IP67 rating, this means
the sensor is not waterproof, it is water-resistant. The rating indicates it can be submerged up to 1m for 30 minutes, and
after that time, water could leak into it. If you keep this in mind the sensors are good, but if you submerge the section
where the cable enters you will have problems. The Robo-Tank Sensor Brackets are designed to keep the critical part dry
if used correctly. (the addition of silicone may make it waterproof, but is not a guarantee). If your setup dictates having
the optical sensor submerged, in any way, then it is strongly recommended to source a fully IP68 rated sensor!
