Asahi Denki Wireless Intercom Parent Unit: WIP-5150SET Parent unit and one child unit, with charger Additional child unit: Model WIP-50 - Brand: ELPA Asahi Denki Co., Ltd. - Model: Intercom for indoor use - Accessories: Charger, stand - Color: White - Features: Wireless Two-way communication possible. Can call everyone at once. Up to 4 units can be connected. No wiring required! Rechargeable, so it can be carried and used. The child unit and charging base parent unit are identified by over 1 million ID codes, so there is no worry of interference even if multiple sets are used. * The parent unit box and instruction manual are not included. The instruction manual can be downloaded from the website. DECT Wireless Intercom Charging base parent unit / Charging base Power supply: DC5V AC adapter included (cord length: approx. 1.8m) External dimensions (approx.): Width 85 x Height 70 x Depth 57 (mm) (maximum value) Weight: Charging base parent unit approx. 70g Charging base approx. 60g Child unit Power supply: Nickel-hydrogen rechargeable battery DC2.4V / 750mAh Wireless communication method: 1.9GHz DECT compliant Communication range: approx. 100m (line of sight) Chime sound: 3 types Charging time: approx. 15 hours Continuous use time (during calls): approx. 3 hours (standby time) approx. 100 hours External dimensions (approx.): Width 57 x Height 137 x Depth 22 (mm) (maximum value) Weight: approx. 110g (including rechargeable battery) Condition: There are no noticeable stains or scratches. Purchased about 3 years ago and stored at home with little use. ● Other notes: ⚠ This is a used item. The condition of the product may vary depending on the individual, so please make your purchase based on the photos. ⚠ Please note that the color may appear slightly different depending on the lighting. ⚠ All items for sale are actual product images. ⚠ Cancellations and claims after ordering are not accepted. Also, claims and returns are not accepted unless there are obvious defects different from the description. If you have any concerns or questions, please inquire in the comments beforehand.