2-in-1 RV Propane Gas Detector,Replace The Old RV Gas Detector #31011,100dB Loud Alarm,12V DC for Motorhome Travel Trailer, Motor Coach (R503 Flush Mount-Black)

Price: $52.99
(as of Oct 08, 2026 13:19:00 UTC – Details)

Product description

Product Description

2 in 1 RV CO & Propane Gas Detectors

R503 Detector adopts two independent and highly sensitive sensors specifically designed for RVs.It is used to detect carbon monoxide & propane gas leak in Motorhome Travel Trailer, Motor Coach, Truck Camper, RV and other similar applications.

The distance between screw holes are compatible with #36681/#31011.

Step 1: Enter into 180s Warm-up period

Power on. The buzzer beeps “Di” twice, two red lights will flash and the green light will always be on. The display will show “-”. Please wait three minutes for sensor preheating.Note : Don’t apply gas to test during the warm-up process because the gas won’t be detected.

Step 2: Normal working

Once the warm-up process is finished, the two red red lights will be off, and the green power indicator will remain on. The display will show “0”.Note : Don’t paint, don’t apply abrasive solvents or other cleaners. Chemicals can permanently damage or temporarily contaminate the sensor inside.

Step 3:CO concentration ≥100ppm or gas concentration ≥ 5% LEL will trigger the alarm.

When the carbon monoxide concentration is equal to or higher than 100PPM, the detector will sound an alarm and the carbon monoxide red alarm indicator will flash.When the carbon monoxide concentration is more than 10 (10000ppm), the number on digital display will be changed into letter A.When the gas concentration is equal to or higher than 5%LEL, the detector will sound an alarm and the gas red alarm indicator will flash.When the gas concentration is more than 10 (=10% LEL, 5000ppm), the number on digital display will be changed into letter A.

Step 4: Get after service support when two Red Lights will Flash on

If the two red lights will flash or Digital Display will show ERR (abbreviation of error), which means sensor has lost efficacy and can’t finish data collection.Engineers on staff from factory help to answer any questions you have related to products usage of natural gas, propane, methane, and sewer etc.

Step 1: Warm-up Process

Step 2: Normal Monitor Status

Step 3: Alarm Time

Step 4: Error Status

What You Get

Technical Specifications

Area of Usage: Motor Home, Travel Trailer, Van Camper, Truck Camper Operating Voltage: 9-16V DC Operating Current: 110mA Max Alarm Set Point: Gas- 5% LEL, CO -100 ppm Warm-up Time: 3 minutes (regular) Response Time: Less than 30 seconds Alarm Sound Level: 85 dB at 1m Operating Temperature: 14°F to 131°F (-10°C to 55°C) Relative Humidity: 15% to 93% avoid condensation Flush mount case: 4 5/8” L x 4 5/8” W x 1/32” H (118x118x7mm)

2 in 1 RV C0 & Gas Detectors：R503 Detector adopts two independent and highly sensitive sensors specifically designed for RVs.The used to detect C0 & gas leak in Motorhome Travel Trailer, Motor Coach, Truck Camper, RV and other similar applications
Easy Operation and Efficient：The RV C0 & Gas Detectors is equipped with lever-nut connector to greatly reduce the wiring work time. Replace traditional electrical tape and wrapped butt connectors. The RV detector is designed with 12v DC +/-20% wide operational voltage
Visual & Audible Detector：Digital LED display shows the level of C0 and the C0 Detector and gas detectoris sensing
Installation And Operation Guide : Face Cover Size: 4 5/8″ Width X 4 5/8″ Length”, Wall Cutout Size: 2″~3 15/16″Width X 3 3/8″~3 15/16″Length. The distance between screw holes are compatible with 31011. Equipped with lever nut connectors, the installation requires no tape or wiring
Warranty and Lifetime Technical Support: We are a company founded and actively managed by gas company technicians and engineers. We offer a lifetime warranty and technical support. If you experience any issues within 60 months, we will offer a replacement service
Customers find the gas detector easy to install, with one mentioning it’s a direct replacement requiring no drilling or cutting. The product receives positive feedback for being an excellent replacement, and customers like how it fits perfectly in their RV.