Suggested Retail: $29.99. Carbon Monoxide Detectors Plug in Wall Portable Carbon Monoxide Detector with Alarm 3-in-1 Travel CO Detector Humidity Temperature Meter Mini Co Gas Monitor Home Hotel Trip Camp RV - This portable Gray Rhino CO detector is designed with high sensitivity and versatility. It features an eco-friendly, modern, and compact design. It is easy to use, simply plug into a socket to turn on. It has a test alarm, adjustable screen brightness, and an alarm that can be switched on/off. The detector has a built-in HD 2.1 IN IPS display and a high accuracy CO sensor. It also functions as an indoor thermometer and a hygrometer. Ideal for traveling and hotel use. Brand: Gray Rhino Model: ‎GR-HD08W -- LOT STICKER: TCE-BOX-BOXTCED0002-ITEM-ba9423a0___LPNRRIF8972832 GRAY RHINO Carbon Monoxide Detectors Plug in Wall, Portable Carbon Monoxide Detector with Alarm, 3in1 Travel CO Detector Humidity Temperature Meter, Mini Co Gas Monitor Home Hotel Trip Camp RV -- SIZES ARE ESTIMATED. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.