Performs comprehensive monitoring of four critical systems in one compact organic LED digital monitor.
DC System Monitoring (up to two batteries)
One input monitors the DC voltage, state-of-charge, current for one battery bank and another input monitors the voltage of an additional battery bank. Alarms include high and low voltage, high current, and low battery.
AC System Monitoring
The VSM monitors a single AC voltage, current, and frequency. Alarms include high and low voltage, high current, and high and low frequency.
Bilge & Tank Monitoring
The VSM has two inputs that can be configured as a bilge or tank monitor. When configured as a bilge input, monitoring functions include pump active, cycle count in the last 24-hours, average cycles in a typical 24-hour period, and total cycles. High alarms can be set for both the minutes of run time in the last hour as well as the number or cycle counts in the last 24-hours. When configured as a tank input, tank status can be represented in both capacity (gallons or liters) or as a percentage of capacity. Custom tank shapes can be auto-calibrated or programmed. Both high and low level alarms can be set for all tanks.
Specifications:
Meter: Bilge, Current, Tank, Voltage
Frequency: 40-90Hz
Current Range: 0-150A AC/-500 to 500A DC
Operating Voltage: 40-300V AC/7-70V DC
Minimum Current Draw: 18.8mA @ 12V, backlight off/35mA @ 12V, backlight off
Small, easy to handle, and does an amazing job of both inflating and delating large fenders and low-pressure inflatable items. Only inflates to 1 psi (enough for the fenders) The 20V battery last a long time. I use a 2 stage pump for inflating the items which require 6 to 15 psi of pressure but, I use this pump to deflate the high pressure toys because it is convenient.
Not sure why they designed it the way they did, but the straps should be attached to the fender. They are very difficult to attach to the piling while holding and bending the fender to fit the piling. Once installed it’s also difficult to pull the straps tight enough so it doesn’t slide down the piling. Once installed it works fine and protected our rail from scraping so if you can install it, you’ll enjoy it.
![Blue Sea 1850 M2 Vessel Systems Monitor [1850]](http://www.innovativemarinegroup.com/cdn/shop/products/74851XL.jpg?v=1654259993&width=1445)