Wireless and convenient TV intercom, VS-SG20L model. Unused item. Three Features: 【Long-lasting】Long battery life (batteries sold separately)! 【Easy Installation】No wiring required 【Convenient】Equipped with "Automatic Recording Function" ・Wireless connection, so no wiring is needed for easy installation. ・The wireless monitor parent unit can record up to 100 entries, with three consecutive images (every 0.5 seconds) per entry, allowing you to check recordings of visitors while you were away at your leisure after returning home. Please check the manufacturer's website for other details. - Model: VS-SG20L - Brand: Panasonic - Type: Wireless TV Intercom - Accessories: Instruction manual Thank you for viewing.