Victron Energy Smart BatteryProtect 220 amps 6-35 volts Bluetooth Capable Blue. The on/off input can be used as a system on/off switch. Specifications for Victron Energy Smart BatteryProtect - 220AMP: Manufacturer: Victron Energy Color: Blue Voltage: 24 volts Amperage: 220 amps Features of Victron Energy Smart BatteryProtect - 220AMP 12/24V Auto Ranging: The Smart BatteryProtect automatically detects system voltage one time only. Bluetooth - programming made easy: When using Bluetooth to program the Smart BatteryProtect any required engage/disengage levels can be set. Alternatively one of nine predefined engage/disengage levels can be set with the programming pin (see manual). If required Bluetooth can be disabled. A Special Setting for Li-ion Batteries: In this mode the BatteryProtect can be controlled by the VE.Bus BMS. Note: the BatteryProtect can also be used as a charge interrupter in between a battery charger and a Li-ion battery. See connection diagram in the manual. Ultra-low Current Consumption: This is important in case of Li-ion batteries especially after low voltage shutdown. Please see our Li-ion battery datasheet and the VE.Bus BMS manual for more information. Over Voltage Protection: To prevent damage to sensitive loads due to over voltage the load is disconnected whenever the DC voltage exceeds 16.3V respectively 32.6V. Ignition Proof: No relays but MOSFET switches and therefore no sparks. Delayed Alarm Output: The alarm output is activated if the battery voltage drops below the preset disconnect level during more than 12 seconds. Starting the engine will therefore not activate the alarm. The alarm output is a short circuit proof open collector output to the negative (minus) rail max. current 50 mA. The alarm output is typically used to activate a buzzer LED or relay. Delayed Load Disconnect and Delayed Reconnect: The load will be disconnected 90 seconds after the battery voltage drops below the preset level. If the battery voltage increases again to the connect threshold within this time period (after the engine has been started for example) the load will not be disconnected. The load will be reconnected 30 seconds after the battery voltage has increased to more than the preset reconnect voltage. Package Contents: Victron Energy Smart BatteryProtect - 220AMP Victron Energy BPR122022000: Smart BatteryProtect 220 amps 6-35 volts Bluetooth Capable Blue