The DVB01 is a multi-function voltage monitoring relay (voltage comparator) designed to monitor DC voltages and trigger a relay output based on set thresholds. Technical Specifications
Power Supply: Requires a DC supply of 5V, 12V, or 24V depending on the specific model variant.
Input Range: Capable of monitoring DC voltages typically from 0V to 100V (actual range depends on configuration). Relay Output Capacity: DC: 0V–30V / 10A. AC: 0V–250V / 10A. Operating Modes (P-1 to P-5)
The module features five primary functions that can be programmed:
P-1 (Voltage Monitoring): The relay pulls in when the measured voltage is between set limits and releases when outside them.
P-2 (Voltage Threshold): Often used for over-voltage or under-voltage protection.
P-3 (Voltage Calibration): Allows the user to calibrate the displayed voltage value against a known source.
P-4 / P-5 (Delay Settings): Short and long presses of [SET] and [SW1] are used to adjust delay times (T1 and T2) before the relay acts. Programming Instructions
Enter Menu: Long press the [SET] button to enter the function selection mode. dvb01 user manual
Select Function: Use the [+] or [-] buttons to cycle through P-1 to P-5.
Adjust Values: Short press [SET] to enter a specific parameter. The flashing digit indicates which value is being modified. Use [SW1] to move between digits.
Save: Once values are set, long press [SET] to save the program and return to standard operation mode. Wiring & Stability Tips
Common Power Issues: If the module and the load share the same power supply, high-current loads (like motors) can cause a voltage drop that resets the DVB01. Solutions: Use separate wiring for the module and the load.
Add a 470uF/35V (or higher) electrolytic capacitor between the DC+ and DC- terminals to stabilize the input.
For detailed diagrams and visual guides, users often refer to resources on Scribd or community documentation such as those found on the Class B Forums.
is a multifunctional voltage monitoring controller designed for high-accuracy direct voltage measurement (0V to 100V) and relay control. It features an industrial-grade microcontroller and provides five user-selectable functions to manage loads based on programmed upper and lower voltage limits. Class B Forums Key Features Multifunction Control
: Includes 5 preset modes: monitoring, charging, discharging, in-range ON, and in-range OFF. Precision Measurement : Measures DC voltage from 0V to 100V with an accuracy of Adjustable Time Delays The DVB01 is a multi-function voltage monitoring relay
: Offers separate activation and deactivation delays for the on-board relay, adjustable from 0 to 99.9 seconds Energy Efficiency
: Features an automatic power-saving mode that can be configured independently. Non-Volatile Memory
: All user-defined parameters are automatically saved and retained even when the power is disconnected. High-Load Capacity
: Capable of controlling DC loads (0-30V/10A) or AC loads (0-250V/10A). Class B Forums Programming Interface The unit utilizes four keys for all operations: : Enters programming mode and saves settings. : Switches between different display or setting modes. [+] and [-]
: Used to increment or decrement parameter values like voltage limits and time delays. Class B Forums Operational Tips Wiring Precaution
: If the DVB01 and the load share the same power supply, it is recommended to use separate wiring or add a shunt capacitor (470uF/35V or higher) to prevent voltage drops that could reset the module during high-current startups. Dimensions : The module is compact, measuring approximately 68 x 44 x 17 mm
, making it suitable for tight industrial or DIY installations. AliExpress
For detailed technical diagrams and setup instructions, you can view the DVB01 User Manual on the Class B Forum Scribd User Manual program one of the five functions USB flash drive or external HDD (FAT32 or
DVB01 User Manual: Voltage Controller | PDF | Power Supply - Scribd
Pages 18–20 cover PVR (Personal Video Recorder) functions, but only if your DVB01 has a USB port. The manual lists requirements:
Critical limitation often omitted: The DVB01 has only one tuner. You cannot record one channel and watch another unless they share the same MUX (multiplex). The manual’s fine print says: “When recording, viewing is limited to channels in the same frequency group.”
User frustration example: “I set a timer to record at 8 PM, but the box was in standby—it didn’t wake up.” The manual clarifies (page 19) that the DVB01 must be left on (not deep standby) for timers to fire, or power management must be set to “Active Standby.”
Place the DVB01 on a flat, ventilated surface. Do not stack other hot devices on it. Connect the supplied antenna or a direct coaxial cable to the RF OUT port.
Some DVB01 models include:
The DVB01, commonly known as the "Daisy Buzzer," is a specialized audio testing device designed primarily for broadcast and engineering environments. Its main function is to generate a consistent, recognizable audio tone (typically a "daisy chain" or intermittent buzz) used to identify specific audio channels, test signal paths, and calibrate sound systems in live production or post-production studios.
Unlike a standard signal generator, the DVB01 is built for ruggedness and portability, allowing engineers to quickly troubleshoot signal flow issues.