Microseven M7WP-MIC waterproof outdoor Microphone for M7B77-POE, M7B57-WPS, M7B77-W,M7D77-POE, Any IP Network Camera & PTZ IP Camera with Audio Interface -An IP camera external microphone Outdoor waterproof Microphone - An IP camera external microphone for M7B77-POE / M7B57-WPS / M7B77-W / M7D77-POE Or Any IP Network Camera & PTZ IP Camera with Audio Interface Camera must have Audio interface ( Buyer complain Microseven microphone does not work on reo link rlc-23 ip camera becasue of reo link camera does not have audio interface) With Microseven IP Camera you get free 24hrs video history in cloud video recorder for your backup! Providing 24-hour motion event recording and 24 hours of retrievable playback history anywhere, on any device, at any time! Add your camera on microseven.tv to enjoy and share your Live Video with family, friends, and clients - at no additional cost! All Microseven IP Cameras are Amazon Certified works with amazon alexa!