Abstract: A system comprising a vaporizing device and a central server is described. The vaporizing device includes a housing and a cartridge, received within the housing, the cartridge including a predefined quantity of concentrate and an identification code associated with the concentrate and uniquely identifying the cartridge. The vaporizing device further includes a control unit configured to read the identification code. The vaporizing device further includes a communication unit configured to transmit the identification code to a computing device of a user. The central server includes a database. The central server is configured to receive the identification code from the computing device and retrieve concentrate information corresponding to the identification code from the database. The central server is configured to transmit the concentrate information to the computing device for displaying to the user.

Abstract: A walk-behind mower has a mower deck, a plurality of wheels, a head, and a plurality of light sources. The wheels are rotatably coupled to the mower deck. The wheels move the walk-behind mower over a support surface in a forward direction and a rearward direction. The head is coupled to the mower deck. The head can store at least one battery pack. The light sources are coupled to at least one of the mower deck and the head. The light sources project light through a continuous illumination angle about the walk-behind mower. The illumination angle extends along an arc from the forward direction toward the rearward direction and is at least 90 degrees.

Abstract: A pyroelectric detector element having defined on a major surface two spaced areas exhibiting radiation absorbing and/or reflecting properties. A mirror-like area comprising a dielectric material is provided in at least part of the space, and preferably extends over all or substantially all of the space, defined between the two spaced areas to reflect the radiation and provide a substantially nil output contribution for the radiation falling on the space.