Description Includes P4255 Kill A Watt(R) CO2 accessory sensor & P4225 display; Sensor plugs into wall outlet & appliance plugs into sensor; Transmits data up to 300ft to the central LCD display; Monitors power consumption remotely within a 300ft wireless range; Built-in software customization to combine KWH with type of electricity generated locally to accurately calculate carbon footprint & electricity costs; Calculates carbon emissions & costs by the day, week, month & year; Can be used with up to 8 sensors sensor part P4244; Displays 8 critical units of measurementLength: 9.20"Width: 8.50"Height: 3.20" Shipping PolicyGround shipments are sent out the same business day or no later than the following business day. Generally ground shipments are sent via UPS.Return PolicyThis item is guarantee against manufacturer defects for 30 days from the date of the delivery on all products. All returns and exchanges must be made within 30 days of receipt of the merchandise.Merchandise must be in original factory condition, and must include all original packaging materials, warranty cards, manuals and accessories.Please contact us for a RMA number before returning the item. Items may be returned only with prior authorization.