Check the listing for details. Caution Sign: Smile You're On Camera Security Magnet. Condition: New. Listed at 3.49 USD. The Caution Sign: Smile You're On Camera Security Magnet is a practical and humorous way for homeowners to promote safety awareness. Measuring 5" x 6", the larger size makes it perfect for displaying on doors, windows, or walls. The red, yellow, and black caution sign with bold black lettering and the phrase "Smile You're On Camera" adds a touch of humor while reminding people that this property has surveillance. This product is an excellent gift for new homeowners or anyone with a sense of humor. Display this caution sign to show visitors you have surveillance and a sense of humor too!.The Caution Sign: Smile You're On Camera Security Magnet is a practical and humorous way for homeowners to promote safety awareness. Measuring 5" x 6", the larger size makes it perfect for displaying on doors, windows, or walls. The red, yellow, and black caution sign with bold black lettering and the phrase "Smile You're On Camera" adds a touch of humor while reminding people that this property has surveillance. This product is an excellent gift for new homeowners or anyone with a sense of humor. Display this caution sign to show visitors you have surveillance and a sense of humor too!.