LED vs LCD — What's the Difference
All RV gas detectors have a status indicator. The difference between LED-only and LCD-equipped detectors is not cosmetic — it's the difference between knowing what's wrong and guessing.
LED-only detectors
Most legacy RV detectors (Safe-T-Alert, Atwood Series 30, Briidea) use 1-3 colored LEDs:
- Green LED on: sensor is operating, no alarm.
- Red LED on + alarm: something is wrong.
- Yellow LED (some models): sensor self-diagnostic fault.
That's the entire information set. When the alarm wakes you, you know that there's a problem — but not which gas, not how concentrated, not how urgent.
LCD-equipped detectors
The SENSYX SRC2000 series uses an LCD that displays:
- During alarm: the gas type (PROPANE or CO) and the live concentration in PPM (CO) or % LEL (propane).
- Normal operation: the LCD is OFF (only a green status LED is visible). This means no nighttime glare, no eyestrain, no light pollution in your sleeping area.
Why "off when normal" is the right design
Some buyers initially worry that an LCD-equipped detector is "always on" and adds visual noise to the cabin. SENSYX deliberately keeps the display dark during normal operation. The display only lights up when there's actual information to communicate — which is during an alarm, not during the 99.99% of the time everything is fine.
Marketing slogan: "When it goes off, you don't guess what it is. You see it."
Why this matters for response
A 75 ppm CO reading and a 25% LEL propane reading require different actions:
- CO: evacuate to fresh air, identify combustion source, ventilate before re-entering.
- Propane: shut off the LP tank at the source, ventilate, do not ignite anything (no lights, no spark, no flashlight that might short).
An LED-only detector tells you to act, but doesn't help you choose how. By the time you've identified the gas (often by smell, in the case of propane mercaptan additive), you've already lost minutes of response time.