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TABLE OF CONTENTS
SAFETY INSTRUCTIONS
WARNING: When using this device, always exercise basic safety precautions, including the following:
• Read all instructions before installation or use.
• Never connect this device to any electrical circuit with other than 12 or 24 volt Direct Current or exceed
the amperage draw listed below.
• Never install the indicator panel in an atmosphere with potentially flammable or explosive vapors.
• Never install the probe cap with float switches into a tank that contains anything other than fresh, gray or
black water.
CAUTION: Dropping or rough handling of float switches may result in damage.
PRODUCT FEATURES
• Eliminates false reading from fouled probes.
• Three float switches, four level indications for all tanks up to 22-inch (559mm) & 45-inch (114cm) in depth.
• Deluxe panel complements bathroom decor and provides international symbology.
• Installs in any rigid tank with optional 3-inch NPT mounting flange.
• One model operates on 12 or 24 VDC.
• Probe cap provides clean out for easy access to interior of tank.
• Cap is available with or without 5/8" vent hose connection.
• Optional shut-off relay plugs into back of circuit board to shut down toilet or water system when gray or
black water tank is full or when freshwater tank is empty.
• Always one level light on to confirm that electrical power is applied.
• Only one level light on at a time to eliminate confusion and save battery power.
• CE and IMCI approved for electromagnetic compatibility.
The TankWatch 4 Level Monitor System is designed to permit remote sensing of liquid levels in wastewater, gray
water or potable fresh water tanks. The TankWatch 4 utilizes three micro-float switches, which activate a four-
light panel. One is fixed and activates a full light when the liquid is within approximately 2-inches of the top
inside surface of the tank. The other two float switches are mounted on adjustable stems and can be positioned
to within 2-inches of the bottom of the tank. The stems are semi-flexible and are designed to flex with the
sloshing of the tank contents. A simple procedure allows one adjustable stem to sense when the tank is empty
and the other adjustable stem to sense when the tank is 1/4 or 1/2 full, depending on the application.
MODELS AND ACCESSORIES
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . .2
Product Features . . . . . . . . . . . . . . . . . . . . . . . .2
Models and Accessories . . . . . . . . . . . . . . . . . . .2
Dimensional Specifications . . . . . . . . . . . . . . . . .3
Product Specifications . . . . . . . . . . . . . . . . . . . . .3
Installation Instructions . . . . . . . . . . . . . . . . . 4 - 5
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . .6
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Manufacturer’s One-Year Limited Warranty . . . . .8
Control Panel Mounting Template
313600113
313600114
313600115
313600116
307230272
600341292
600342490
385318714
360600212
360600224
TankWatch
®
4 Panel and Cap with Vent, 22-inch Probes
TankWatch
®
4 Panel and Cap without Vent, 22-inch Probes
TankWatch
®
4 Panel and Cap with Vent, 45-inch Probes
TankWatch
®
4 Panel and Cap without Vent, 45-inch Probes
Universal Flange (3-inch NPT) with gasket and stainless steel hardware
Plug In Relay, 12VDC
Plug In Relay, 24VDC
“Do Not Flush” Panel
TankWatch
®
4 Panel with 12VDC Relay
TankWatch
®
4 Panel with 24VDC Relay
Part Number Description