Remote key finder

Feature for remote key finder: 1) 1 Transmitter with one button and 4receivers2) Locates your forgettable articles quickly (such as key)3) Protects against children, pets at home or supermarket, purse or baggage, TV remotes, PDA, eyeglasses, and wallets from losing4) Prevent valuable and belongs from being left somewhere5) Remote distance: 60-80 feet6) 90-95dB sound7) Frequency: 433.92MHz or 303.875MHz8) One CR2032 3V (receiver), one A27, 12V (transmitter)9) Battery life: 3-6 months