- This add-on camera slots right into your existing Blink security system - no fuss, no extra wires- It's ready to catch the action in crisp Full HD day or night - you can check in with two-way audio too- With up to two years of battery life, it just gets on with the job, and you can place it where you like- This weather resistant camera's ready for drizzle, downpours, and frosty temperatures