The BST900W includes hidden functionality modes to change how the device behaves upon receiving power. To enter these settings, hold down the button while powering on the module. Use the arrows to cycle through the numbers and press OK to select. Mode 00: Standard Manual Mode
The input voltage is higher than or equal to the set output voltage, or the output is turned off.
Is the module displaying a specific ?
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Tighten the terminal block screws securely. Loose connections create high resistance, which causes dangerous heat buildup at high currents. Programming and Operating Instructions
: Ensure you have actively turned the output switch ON (the OUT LED must be lit). If it is lit, confirm your target voltage setting is higher than the input voltage.
The BST900W features a four-digit LED display, four status indicator lights, and four tactile control buttons. Status Indicators (LEDs) The BST900W includes hidden functionality modes to change
The BST900W features 10 memory locations to save frequently used voltage and current combinations.
The BST900W has hidden functional modes labeled . To enter these menus, hold down the SET button while turning on the input power source . F1: Auto-Output Mode
Enters configuration modes, switches between voltage/current settings, and saves data. Up Arrow (▲): Increases values or navigates menus. Down Arrow (▼): Decreases values or navigates menus. Mode 00: Standard Manual Mode The input voltage
Illuminates when the module enters current-limiting mode.
(Constant Current) let you monitor the converter’s behavior at a glance. Quick Start: How to Use the BST900W
Long press SET for 10 seconds. Use arrows to pick a slot (0–9), then press SET again to save.
Warning: Do not use a manual for a different voltage (e.g., 24V if your unit is 12V) or different waveform (modified vs pure sine wave) – this can damage sensitive electronics.