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Tool Type
Voltage Detector
LED Feedback
Visual Indicator
12V DC
24V DC
Ease of Installation
Beginner (Installs < 10 minutes)
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Check Voltage, Polarity, Continuity, and More with this Tester
Seco-Larm ST-BT03Q Multi-Purpose Battery Tester 12 or 24V
SECO-LARM Enforcer ST-BT03Q Multi-Purpose Battery Tester 12 or 24V
SECO-LARM Enforcer ST-BL01Q Hi-Speed Latching Tester
Item# 77553
Price: Normally $69.99 
Hot Deal $27.28
Free shipping on orders over $50 - See Details


  • Selectable 1 or 1/2 amp load
  • Tests Voltage, Battery Load, Voltage Drop, Polarity, PTC Fuses, Continuity
  • DC input jack
  • Test leads with alligator clips and LED polarity indicator

Essential Info

Use this versatile tester to check on voltage levels at various points in circuits. Measure the voltage drop between points to test components. Place a battery under load to test its level of charge. Test polarity and continuity, and check PTC fuses to see if they're working properly. There are both audible and visual indications of continuity. Includes a set of test leads with alligator clips and an LED polarity indicator, and the leads are of unequal length to avoid touching them together.

What's Included

  • 1x - Multi-Purpose Battery Tester 12 or 24V

  • 1x - Test Leads

  • 1x - Instruction Manual

  • Specifications

    Manufacturer Product No.ST-BT03Q
    Operating Voltage5 to 24VDC
    Max Load Current0.5 or 1A Selectable
    Power RequirementNone
    LED Voltage IndicatorsBlue: ≥12VDC
    Green: 10.8~12VDC
    Yellow: 10.0~10.7VDC
    Red: ≤9.9VDC
    Weight1.4 oz (40g)
    Dimensions2 inches x 1.75 inches x 1.125 inches (51 millimeters x 44 millimeters x 29 millimeters)
    Manufacturer Warranty1 year, limited

    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: SECO-LARM USA Inc, Tel: (949) 261-2999


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