The Sentry Dose Pump has a large red LCD display, internal battery backup, compact size, quiet, dependable performance dosing as little as 0.3 ml./hour up to 100 ml./hour. Ideal for 2-part calcium/alkalinity addition. Also included is a higher-flow (3 - 800 ml./hour) one-channel tubing set. Can easily be used for either night-time only kalkwasser dosing, 2-component dosing or makeup-water additions.

• Plug-In Darkness Sensorfor pump activation only when aquarium lights are off. No need for separate timer, or resetting timer after power outages.
• Float Switch Compatibility. A Float switch is available as an accessory, and is plugged into the control jack in the back of the pump. The float switch is connected to transistor-level voltage, providing safety and dependability.
• High Volume One Channel System. The Sentry is made to be used as a one-channel makeup water doser. Using the included long-life tubing set, the Sentry will pump up to 800mL per hour, or up to 5 gallons per day.
• Two-Channel Capability Built In, with digitally adjustable dosing rates from .3 ml. to 100 ml./hour per channel when used with the included 2-channel tubing set.
• A/C Control - Using the optional A/C controller, the Sentry can easily be controlled by other devices, such as pH controllers, electronic float switches or aquarium monitoring systems.
• Heavy duty Swiss made motor
• Battery backup
• Quiet operation- you won't hear the Sentry Dose Pump running
• Sentry Dose Pump is covered by a 2 Year Warranty

Darkness Sensor - Included

Float Switch

AC Controller