LED stack light QTC70ML

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Overview
Ø70mm direct-mount modular LED signal tower available in steady or flashing modes. Optional built-in buzzer (standard up to 85dB). Multiple voltage options and IP protection variants.

Product Features

• Modular LED steady/flashing signal tower lights with lock-type stack assembly (no tools required)
• Separate inner color filter lens for improved signal visibility
• QTCA type features integrated outer lens and cover for simplified appearance
• Translucent filter ensures comfortable viewing when lights are off
• Built-in buzzer: standard Max.85dB at 1 m; optional 100dB or 2-sound buzzer
• Compatible with NPN open-collector inputs for direct PLC connection (PNP types noted)
• Flashing rate: 60–80 flashes/min
• Operating temperature: -30°C to +50°C
• Pre-wired standard; M12 connector available on request
• Certificates: CE, UL; RoHS compliant

Specifications (summary)
Models/variants: QTC70ML; QTC70ML-BZ (built-in buzzer); QTC70MLF (steady/flashing); QTC70MLF-BZ; QTCA70ML; QTCA70ML-BZ; QTCA70MLF; QTCA70MLF-BZ

Columns: Layer | Voltage (DC12V / DC24V / AC110V-220V) | Certificates | Weight (DC12V / DC24V / AC) | Color(s)
1 | DC12V / DC24V / AC110V-220V | CE, UL | 0.44kg / 0.44kg / 0.54kg | R - Red
2 | DC12V / DC24V / AC110V-220V | CE, UL | 0.58kg / 0.58kg / 0.68kg | R - Red; A - Amber; G - Green
3 | DC12V / DC24V / AC110V-220V | CE, UL | 0.79kg / 0.79kg / 0.89kg | R - Red; A - Amber; G - Green
4 | DC12V / DC24V / AC110V-220V | CE, UL | 0.94kg / 0.94kg / 1.04kg | R - Red; A - Amber; G - Green; B - Blue
5 | DC12V / DC24V / AC110V-220V | CE, UL | 1.09kg / 1.09kg / 1.19kg | R - Red; A - Amber; G - Green; B - Blue; W - White

Electrical / Current (per 1 layer)
Light source current (1 layer): DC12V = 105 mA; DC24V = 70 mA; AC110V–220V = Max.60 mA
Buzzer current: DC12V = 40 mA; DC24V = 75 mA; AC110V–220V = Max.55 mA

Sound / Tone
Standard built-in buzzer example: intermittent “Pi-- Pi--” slow pattern. Optional 2-sound patterns and continuous tone types available.

Materials
Lens: PC; Inner lens: PC; Housing: ABS

Accessories (typical)

• TWS80 (mounting bracket)
• TWA80 (mounting bracket)

Notes
AC models: free-voltage range 100–240V. UL-listed model available for DC24V.

Technical specifications

• Brand: Qlight
• Series: QTC / QTCA
• Model designation: QTC70ML (variants include QTCA70ML and buzzer/flash versions)
• Diameter: Ø70 mm
• Height (depending on layers): 126–399 mm (typical, depending on number of modules)
• Voltage options: DC12V, DC24V, AC110V–220V (AC free-voltage 100–240V)
• Flashing rate: 60–80 flashes/min
• Buzzer volume: standard up to 85 dB at 1 m; optional 100 dB and 2-sound types
• Protection rating: IP65 (standard); IP54 (built-in buzzer)
• Operating temperature: -30°C to +50°C
• Input compatibility: NPN open-collector (PNP types noted)
• Pre-wired standard; M12 connector on request
• Certificates: CE, UL; RoHS compliant
• Materials: Lens/Inner lens - PC; Housing - ABS