Complete Guide to Qronz Beacon & Tower Signal Lights

🚨 Qronz Beacon & Tower Signal Lights: The Complete Sizing, Wiring & Troubleshooting Guide

Pick the right diameter, color, and alarm spec in under 5 minutes with no guesswork.

⚠️ Before you order: the most common mix-ups are "diffused" vs. "clear" lens options, and ordering a lead-wire unit when your panel acutally needs a quick-disconnect.

Use the spec tables below to confirm diameter, connection type, and alarm rating before you check out.

Qronz beacon and tower lights from Hofon Automation are a proven, field-tested line built for 105°C heat resistance and corrosion-resistant wiring. They are ideal for machine status indication, panel alarms, and line-side signaling in demanding industrial environments.

1️⃣ Choose Your Light Type & Size

🔵 Beacon Lights

  • 30mm, 50mm, or 90mm diameter
  • Steady LED, diffused lens
  • 12V or 24V
  • 50mm size only: 80dB continuous alarm

🔶 Tower Signal Lights

  • 50mm or 70mm diameter
  • Steady LED, 1–5 color stack or mixed color
  • 12V or 24V
  • Optional fixed or adjustable alarm

Quick rule: need a single-point alarm/status light? Go beacon. Need a stacked multi-color signal (like red/yellow/green run status)? Go tower light.

2️⃣ Match Your Connection Type

Connection Cable Length Best For
Male M12 quick disconnect 0.3M PVC cable Fast swaps, panels with M12 ports
Lead wire 1M cable Direct hardwire, custom enclosures
💡 Tip: Every model, beacon or tower, ships with an integrated, corrosion-resistant pigtail line rated to 105°C, so you can mount these in demanding environments without a separate junction box.

3️⃣ Colors, Alarms & Lens Options

7-color beacons (30/50/90mm): one physical light, one of 7 colors depending on how you wire it: red, green, blue, yellow, magenta, cyan, or white. This lets you stock a single SKU for multiple status signals.

Tower lights: stack 1–5 colors per unit (red, yellow, green, blue, white). A mixed 7-color version is also available in 50mm. Add an alarm and the max color count drops to 4 per stack.

🔊 Alarm Specs

  • Fixed alarm (tower): 95dB, continuous tone
  • Adjustable alarm: 75–90dB, continuous tone
  • Beacon (50mm only): 80dB fixed, continuous tone

🔍 Lens Options

  • All 50mm units: diffused lens
  • 70mm tower units: diffused or clear (high-intensity) lens
  • Clear lens = brighter, more directional beam

✅ Quick Reference Checklist

  • Confirm diameter: 30mm / 50mm / 90mm (beacon) or 50mm / 70mm (tower)
  • Confirm voltage: 12V or 24V matches your control panel
  • Confirm connection: M12 quick disconnect (0.3M) or lead wire (1M)
  • Need sound? Pick fixed (95dB) or adjustable (75–90dB): max 4 colors with alarm
  • Need max brightness on a 70mm tower? Choose clear lens over diffused
  • Rated for continuous duty up to 105°C

🛠️ Troubleshooting & Emergency Fixes

Light won't turn on

  • Check voltage match. A 24V unit wired to 12V will stay dark, not just dim
  • Inspect the pigtail line at the base for damage or pinched wiring
  • Verify M12 connector is fully seated and locked (quarter-turn to lock)

Wrong color displaying

  • On 7-color models, color is set by which wire pair is energized. Re-check the wiring diagram, not the unit itself
  • Confirm you didn't cross a shared common wire on a multi-color tower stack

Alarm too loud or too quiet on the floor

  • Fixed-alarm units are locked at 95dB. Swap to an adjustable model (75–90dB) if volume needs to change

Ready to spec your signal light? Shop the full Qronz line: