Battery Sensors: BV2, DCPM1 and BMRV1
Battery Voltage 2 (BV2) Sensors
for Battery Voltage Only
Each BV2 sensor measures a single DC Voltage and is labeled with a unique RV Whisper® serial number making it easy to add the sensor to your RV Whisper® monitor station. Up to 10 BV2 sensors can be added to a single RV Whisper® monitor station. Motorized RVs typically use two BV2 sensors: one for monitoring the house batteries and one for monitoring the starting batteries.
Logged BV2 data can be easily viewed in the RV Whisper app. Customizable Alerts are sent via email and text messages.
The BV2 sensors fork connecters can be fastened to your battery wiring. Just connect the red wire to +12 Volts and the black wire to Ground. The fork connecters fit M8 studs and smaller (8mm diameter or 5/16″ diameter studs).
Pet Safety Early Warning. BV2 sensors can usually alert you when you lose shore power in your RV by sending email and text messages when the RV battery voltage falls below 13.0 Volts for a few minutes. For most RVs, this means that there is no AC voltage available for the on-board battery converter / charger. For pet safety, this can give you an early warning that your RV Air Conditioner does not have power to operate. (NOTE: if solar panels are installed on your RV, they may keep the battery voltage from dropping when you lose shore power. In this case, you should consider adding a Power Watchdog surge protector to your RV Whisper system for Pet Safety.)
DC Power Meter (DCPM1)
for Voltage, Amps, Amp Hours, State of Charge
(Also known as Thornwave PowerMon Battery Monitor)
The DCPM1 connects to your RV batteries (with an external 500 Amp shunt or its internal 60 Amp shunt) to measure DC current, voltage and power and calculate an accurate battery State of Charge. The DCPM1 uses Bluetooth Low Energy wireless communications to transmit data to the RV Whisper® Monitor Station . This makes the installation in an RV easier than traditional battery monitors because no signal wires need to be run. The DCPM1 is the same device as the Thornwave Labs Inc. DC Power Monitor Classic which comes with its own free Android and iOS phone apps for initial configuration and for viewing real-time data and can monitor two separate DC Voltages. After the DCPM1 is installed in your RV battery compartment, and the Thornwave PowerMon phone app is used to configure it, you can then add it to the RV Whisper® Monitor Station. The monitor station logs the DCPM1 data every few minutes so your battery data can be securely viewed over the internet. All of the display, graphing and alerting features of the RV Whisper® web app are available for the DCPM1 data.
The RV Whisper® DCPM1 is a great way to track the status of your RV Batteries when relying on solar power and/or generators to keep your batteries charged. The ability to easily see the current and historical battery charging and discharging data over the internet helps bring peace of mind to RV owners who spend significant time unplugged from shore power.
If you already own a Thornwave Battery Monitor / DC Power Monitor you can add it to your RV Whisper® Monitor Station as another sensor. Or you can purchase the DCPM1 directly from RV Whisper.
If you already own a PowerMon-5S from Thornwave Labs, that can also be added as a DCPM1 sensor to your RV Whisper system. The two biggest differences are the PowerMon-5S has an integrated shunt that must be installed on the Positive side of your battery banks and it only measures a single DC Voltage. The PowerMon “Classic” can use an external shunt installed on the ground side of the battery bank and it can monitor two DC voltages.
Battery Mole RV (BMRV1)
for Battery Voltage and Temperature
An easy to install wireless sensor, the Battery Mole RV (BMRV1) measures Battery Voltage and Temperature. The BMRV1 sensors are connected to RV batteries with battery clips. Each BMRV1 sensor is labeled with a unique RV Whisper® serial number making it easy to add the sensor to your RV Whisper® monitor station. Up to 10 BMRV1 sensors can be added to a single RV Whisper® monitor station. Motorized RVs generally use two battery moles so both the house and starting batteries can be monitored.
Logged BMRV1 data can be easily viewed in the monitor station app. Alerts can be sent via email and text messages.
BMRV1 sensors can alert you when you lose shore power in your RV by sending email and text messages when the RV battery voltage falls below 13.0 Volts. (For most RVs, this means that there is no AC voltage available for the on-board battery converter (charger). For pet safety, this can give you an early warning that your RV Air Conditioner does not have power to operate.