3 Pk Ecolink WST-212 Honeywell 2GIG Wireless Door/Window Sensor w/Local Bypass This Ecolink Wireless Door Window Sensor features 100% compatibility with Honeywell wireless receivers and proven reliable crystal-based wireless technology. Brand: Ecolink Part Number: WST-212 MPN: WST-212 Type: Window Sensor Color: White Connectivity: Wireless Smart Home Protocol: Z-Wave Operating Sound Rating: 100 dB Maximum Resolution: 640x480 Power: 1000 W Features: Outdoor/Weatherproof, Battery Style: SURVEILANCE_SYSTEMS SIMILAR PRODUCTS Features Compatible with Honeywell 5800 wireless Proven reliable wireless technology Easily put the sensor in bypass mode right at the door or window Only 1.0? x 2.25? x 0.25? Snap-on interchangeable brown case (included) Replaceable lithium battery (CR2032) 5-8 year battery life FCC, IC, and ETL certified Details Shipping Weight: 0.75 pounds We ship same day if purchased by noon CT M-F We even ship on some Saturday mornings (when we are in town). Please understand that the shipping time quote that gives you is an estimate. Our experience is that the USPS hits those quotes about 95% of the time. All orders will go USPS Ground Advantage unless upgraded. We offer expedited options at extremely reasonable prices (under our true cost), including FedEx 2 business day shipping for any items that will fit in a flat rate FedEx Pak envelope (price and option is only valid if this item will fit into a FedEx Pak envelope). Please check all of your options before buying. We ship to all 50 US states and territories, as well as to many international destinations. handles our international shipping, plus all packages to AK, HI and all territories. If you do not see a shipping quote for your zip code or country in the shipping tab, does not offer shipping to your destination on that item. 30-day Money Back Guarantee If you're unhappy with your order, you may return it back for your money back within 30 days. Items must be returned in the SAME CONDITION that they went out in. We cannot accept returns on items that have been opened, worn or altered in any way from the original condition.