The images of your baby are transmitted via 2.4Ghz technology with a range of up to 100m.
The receiver has a 2.5 inch color screen with a resolution of 480x240px. Besides the camera there is of course also a microphone installed to transmit sound.
Apparently there are accessories for the Goscam (somehow a bad name: "go scam") that detect bedwetting or motion. Goscam is not selling direct and is looking for OEMs and distributors for their products.
More details on the Goscam site. Topselling Baby Monitors