Replacing a Safe-T-Alert RV Gas Detector
SENSYX SRC2000-S and PRC2000 are direct-fit replacements for MTI Safe-T-Alert 20-441, 25-741, and 30-442 series RV gas detectors.
Compatibility chart
| Your Safe-T-Alert | SENSYX replacement | Mount |
|---|---|---|
| 20-441 series (dual) | SRC2000-S | Surface |
| 25-741 series (dual) | SRC2000-S | Surface |
| 30-442 series (dual) | PRC2000 | Flush |
| 35-742 series (dual) | PRC2000 | Flush (verify cutout) |
What you gain by switching
- LCD readout — see real-time gas type + PPM during an alarm. Safe-T-Alert is LED-only; you can hear the alarm but cannot tell which gas or how concentrated.
- 75 ppm CO pre-alarm — Safe-T-Alert alarms only at the UL 2034 minimum of 150 ppm. SENSYX warns 30+ minutes earlier.
- Disclosed sensor source — UL-Recognized FIGARO sensor (Japan). Safe-T-Alert does not disclose their sensor source publicly.
- Lower price — SENSYX SRC2000-S is $49.99 retail. Safe-T-Alert 25-741 typically retails $55-58.
What Safe-T-Alert wins on
Honest disclosure: Safe-T-Alert holds a UL Listing on the finished product. SENSYX is tested to UL 1484 / UL 2034 standards but the finished product is not UL Listed (the FIGARO sensor inside is UL Recognized at the component level). For most RV-owner use cases this distinction does not affect day-to-day safety; if your fleet or insurer specifically requires a UL-Listed product, Safe-T-Alert remains the choice.
Install
SRC2000-S surface units swap directly into the same screw pattern as Safe-T-Alert 20-441 / 25-741. PRC2000 flush units swap into the same cutout as Safe-T-Alert 30-442. Wiring is standard 12V red/black with chassis ground — same as Safe-T-Alert.
Shop SRC2000-S Surface — $49.99 → Shop PRC2000 Flush — $49.99 →