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    …a 12V battery (this is a 24V battery).   Specifications: DC Charger: Input: 100V to 240V 50/60Hz |  Output: 27V 600MA Main Unit DC: Output: 24V x 2.5A max |  Input: 27V 1A max Fuse: 250V 10A 5x20mm fast blow Size: 5.75in x 5in x 3.125in (WxLxH)   Whats Included? Battery Backup Module Battery Charger…

    $129.99

    …will get a lot of value out of the Ecotech Battery Backup module.  It is one of the easiest battery backup solutions on the market, and once you piece together another battery backup configuration there is a ton of value in the Ecotech line and their battery backup In an aquarium with no flow, fish…

    $173.25

    …reproducible readings. Large LCD Display Reliable, Repeatable results Auto Off feature turns off after 10 minutes Works with fresh or saltwater 9v battery included   Replacement MI412 Reagents - Milwaukee MI512 Reagents for MI412 Low Range Phosphate Photometer   A good, reliable phosphate test kit…

    $189.99

    The Tunze Turbelle Safety Connector allows for safe connection to pumps. It contains a 4 Amp fuse and permits normal operation with the Tunze power supply unit. In case of a power failure, it will automatically switch over to a battery or another direct-current source.

    $54.99

    …High Frequency alarm Extremely sensitive (works with RODI water) Detects water as shallow as 1/32" Replaceable 9v Battery (not included) lasts up to 24 months (recommend testing battery once every 6 months) Dimensions: 4.25" x 3.5" x 1.75"   Pro Tip: By placing a paper towel under the sensors can…

    $12.99

    …per stage, up to five stages  Default Setting - 12 months  Batteries - 2 x AA (included) Battery Life - approx. 18 months  Base Unit Dimensions - 100 x 63 23 mm (4 x 2.5 x 0.9 in)  Base Unit Weight - 119 g (4.2 oz.) (including batteries) Flow Switch Cable Length - 93 cm (36.6 in)  Flow Switch…

    $39.99

    …what the corals actually have to offer.  Great for photography Aids in pest and parasite hunting Portable for frag swaps or local fish stores Can be used with the aquarium lights on or off Shows off corals true bioluminescence   What's Included? 1x Polyplab Scope Blue LED Flashlight 1x AA Battery

    $24.99

    Single Output | Battery Powered | Silent Cobalt USB Powered air pumps use a 5V DC powered motor that also has an onboard battery that can last up to 24 hours without a direct connection to a power supply. It can run continuously or with a 10-second on/off cycle in the battery powered mode to make…

    $25.99

    …press it down against the prism and tighten the set screw.   Suggested Refractometer Body Diameter - 0.965" (24.6mm) Works with BRS Refractometers Compatible with other brands Can be replaced in minutes Included onboard battery lasts for years   What's Included? 1x LED Refractometer Prism Cover  

    $4.99

    Eheim Model Number: 3531090 EHEIM QUICK VAC PRO MANUAL Battery Life: 4 Hours

    $48.99

    …membrane and DI resin. This unit features a digital display and comes with two 1/4" GA Murdock Quick Connect Tee's with double o-rings to ensure a proper seal. As with all HM-Digital products, the DM-1 comes factory calibrated.   Replacement Battery Type - LR44G   TDS Meter Installation Instructions

    $29.99

    …floor these are a no brainer! Making the LBS-10 ultra safe is when the battery is starting to get low, it gives you an audible alert, and before the battery completely dies the solenoid valve will latch shut until the battery is replaced.    Possible Applications: RODI Systems Dishwashers Coffee…

    $53.00

    …to the outside of the aquarium. The LED light should shine into the entry path of the trap, luring larvae into the trap opening.   Whats Included: 1x Larval Trap 1x Battery powered LED light (battery included) 1x Rigid airline tube 2x Suction Cups   Note: Air pump and airline tubing not included.

    $58.99

    …ppt Temperature Compensation - Automatic from 5 to 50.0 ºC Battery Life - Approximately 100 hours of continuous use Environment - 0 to 50 °C (32 °C to 122 °F) RH max 100%   What's Included? 1x HI98319 Marine Salinity Tester 1x CR2032 Battery (installed) 1x Storage Case 4x 35ppt Calibration Standard…

    $69.00 $62.10

    Dual Output | Battery Powered | Silent Cobalt USB Powered air pumps use a 5V DC powered motor that also has an onboard battery that can last up to 24 hours without a direct connection to a power supply. It can run continuously or with a 10-second on/off cycle in the battery powered mode to make the…

    $35.99

    The Hydor EKOMIXO fish feeder operates on 2 AA batteries (not included) and has a low battery indicator feature. This feeder offers one touch operation making automatic fish feeding very simple. Choose from settings to feed once, twice, or three times a day. The food container can be adjusted to…

    $32.99

    The Milwaukee MW101 pH Meter with battery is a low cost, high quality and reliable pH meter. The Milwaukee MW101 pH Meter ships complete with a pH probe, calibration solution, a 9V battery, instruction manual and a screwdriver for easy calibration. Milwaukee Instruments offers the most affordable pH…

    $96.99

    …required) Battery Backup Compatible Neptune Apex Ready   Another great feature of the module is that it allows you to hook up your gyre to a backup battery. The module will automatically detect when main power is lost and will slow the gyre the 30% speed to extend the life of the battery.   Whats…

    $124.99 $112.49

    …or Power Outages The Rescue Air USB Battery Powered Air Pump is perfect for any emergency. With the onboard battery and included a battery bank, the pump can be powered for up to 72 hours. It can run continuously or with a 10-second on/off cycle in the battery powered mode to make the pump last as…

    $39.99

    …in Alternating Gyre Mode (additional cable required) Battery Backup Compatible Backward compatible with Maxspect 100 series. Neptune Apex Ready   Another great feature of the module is that it allows you to hook up your gyre to a backup battery.  The module will automatically detect when main power…

    $124.99

    …Measure Operated by a single AAA battery.  Range: 0.00 to 300 ppm (mg/L) Resolution: 1 ppm (mg/L) Precision: ±5% of reading ±5% ppm @ 25°C Light Source: LED @ 610 nm Light Detector: Silicon photocell Environment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing Battery Type: (1) 1.5V AAA Auto-off:…

    $49.95 $44.96

    …at 25°C Light Source: Photodiode @ 610 nm Light Detector: Silicon photocell Environment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing Battery Type: (1) 1.5V AAA Auto-off: After 10 minutes of non-use Dimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5") Weight: 64 g (2.25 oz.) Method: Colorimetric…

    $49.95 $44.96

    …illuminating an indicator light when the outlets are energized. Perfect for any type of lighting Large LCD display Multiple programming options 1-Minute programming intervals Rechargeable Ni-MH battery Operates two devices at the same time   What's Included? 1x Hamilton Dual Outlet Digital Timer

    $19.95

    …Photocell Method - Adaptation of the EPA method. The reaction between copper and the bicinchoninate reagent causes a purple tint in the sample Battery - 1.5V AAA (included) Auto-Off - After 10 minutes of non-use Dimensions - 3.2" x 2.4" x 1.5"   What's Included? 1x Hanna HI702 Checker 2x Testing…

    $49.95 $44.96

    …Vectra Battery Backup Booster will plug in directly between the controller on the Vectra series of pumps and the battery backup allowing your aquarium system to have flow in the event of a power outage. Connects in seconds Essential in case of a power outage Auto On/Off mode conserves battery  …

    $30.45

    …reliable pH measurements. This is a great option for quick spot checks such as when mixing water or when testing tap water or RO/DI output. Specifications: Range: 0.0 - 14.0 pH Resolution: 0.1 pH Accuracy: +/- 0.2 pH Calibration: Manual 1 point Battery Life: 700 hours Dimensions: 150 x 30 x 24 mm

    $24.99

    …should last a lifetime.   Features Includes pH probe and calibration fluids pH probe has a 10ft high suppression cable and BNC connector Monitor is powered by a 9-volt battery (not included)   What's Included? Pinpoint pH Monitor pH Probe 7.0 & 10.0 Calibration Solutions   Manufacturer's Manual

    $94.99

    …Measure Operated by a single AAA battery.   Specifications: Range: 0.0 to 20.0 dKH Resolution: 0.1 dKH Precision: ±0.3 dKH ±5% of reading Light Source: LED @ 610 nm Light Detector: Silicon photocell Environment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing Battery Type: (1) 1.5V AAA Auto-off:…

    $49.95 $44.96

    …Silicone 3.3' Power Supply: 3x AAA batteries (included) Battery Life: Approximately 3 years of use Auto-Off: 8 min, 60 min, or disabled Dimensions: 4.2" x 2.3" x 0.65"   What's Included? 1x HI98509 Checktemp Thermometer 1x Monitor Stand 1x 3.3' Probe & Cable 3x AAA Batteries    HI98509 Owners Manual

    $39.00 $35.10

    …required) Battery Backup Compatible Neptune Apex Ready   Another great feature of the module is that it allows you to hook up your gyre to a backup battery. The module will automatically detect when main power is lost and will slow the gyre the 30% speed to extend the life of the battery.   Whats…

    $124.99

    …and then plugging it into a computer style UPS (uninterrupted power supply) along with your router/modem and an energy bar, you can have a complete battery backup system. With that, it can notify you through email or text messaging when power is lost and control certain life support outlets like low…

    $15.95

    …Large Multi-Level LCD Two-Button Operation Integrated Temperature Sensor Automatic Calibration Stability Indicator Automatic Shut-Off Low Battery Indicator Battery % Shown at Startup   Specifications: pH Range - 0.0 to 14.0 pH pH Resolution - 0.01 pH pH Accuracy - ±0.1 pH Temperature Range - 0.0 to…

    $49.50 $44.55