In a tensioner for a timing chain, a spring-biased plunger for urging a shoe into sliding engagement with the chain is temporarily held in a retracted condition, prior to installation of the tensioner, by a stopper having a pin that extends through a hole in the tensioner housing and engages a grove formed in the plunger. The node shares memory with other nodes of the multiple-node systems, and is connected with the other nodes via a bus. At least one lengthwise support rib is formed in the baking surface and connects with the band of material at both ends of the baking tray.