Alderon, 2012018, VersAlarm VLIO-01+1A5GNHPR50 I/O 1-Zone Tank Alarm, Rated Type 3R, 120VAC, High Level, 50' Alarm Float, RubberLox Pipe Clamp
Features:
- Power On Indicator - Green LED illuminates the top cover of the enclosure to indicate the power is on.
- Alarm Beacon - During an alarm condition, the red alarm LEDs will illuminate, flashing inside the top cover of the enclosure.
- Alarm Buzzer - The alarm buzzer will annunciate in addition to the visual indication provided by the red LEDs during an alarm condition.
- Test/Silence Pushbutton - This button may be used to either test or silence the alarm. Testing will activate the alarm beacon and buzzer. During an alarm condition, it will silence the buzzer and the red LEDs will stop flashing and remain solid.
- Sensor Input - Terminals for sensor connection.
- Auxiliary Contacts - Interface with an external device. The contacts are rated for 24VDC at 0.5A maximum.
- Power Mains Input - Terminals for L1 and L2/N to install power.
- Power Indicator Turn Off - Flip switch down to turn off green power LED. Reverse process to turn power indicator back on, flip switch up.
The VersAlarm™ I/O 1-Zone Tank Alarm is an indoor and outdoor rated alarm panel, powered by 120VAC or 230VAC with conduit connections (required). When powered, the green LED will illuminate inside the top cover of the enclosure to indicate the unit is powered on. This alarm can be used for a wide variety of applications, including but not limited to: septic tanks, sump pits, holding tanks, pump chambers, and water tanks.
The alarm panel is equipped with audible and visual alarm indication, activated by the normally open or normally closed float switch connected to the terminal block. A variety of sensors can be used such as a float switch, pressure switch, or any "dry" type sensor that "closes" during an alarm condition (normally open or normally closed). Use the auxiliary contacts to connect to building automation systems (BAS) and phone dialers.
Use normally open float switches for high level alarm indication and normally closed float switches for low level alarm indication.
During an alarm condition, the red alarm LEDs will illuminate, flashing and the buzzer will annunciate. The alarm condition will stay on until the alarm float switch is deactivated. If the test/silence pushbutton is pressed during an alarm condition, it will silence the buzzer and the red alarm LEDs will stop flashing and remain solid. The silence condition will reset when the alarm float switch deactivates. If the alarm is in silence mode for longer than 24 hours, the alarm will reactivate.
For more information, please see 
Data Sheet
