Model: W86111 www.lacrossetechnology.com/support pg. 8CARE AND MAINTENANCE Do not mix old and new batteries Do not mix Alkaline, Standard, Lithium or RechargeableBatteries Always purchase the correct size and grade of battery suitable forthe intended use. Replace all batteries of a set at the same time. Clean the battery contacts and also those of the device prior tobattery installation. Ensure the batteries are installed correctly with regard to polarity(+and -). Remove batteries from equipment with is not to be used for anextended period. Remove expired batteries promptly.WARRANTY AND SUPPORT INFORMATIONLa Crosse Technology, Ltd. provides a 1-year limited time warranty(from date of purchase) on this product relating to manufacturingdefects in materials & workmanship.Before returning a product, please contact our friendlycustomer support with questions or visit our online help(manuals and FAQS):Phone: 1-608-782-1610Online Product Support: www.lacrossetechnology.com/supportProduct Registration:www.lacrossetechnology.com/support/registerView full warranty details online at:www.lacrossetechnology.com/warranty_info.pdfWarranty Address:La Crosse Technology, Ltd2830 S. 26th St.La Crosse, WI 54601Protected under U.S. Patents:5,978,738 | 6,076,044 |RE43903