Abstract: A revenue and productivity optimization system includes a service request device, also called a “smart bell,” an environmental sensor near or incased in the service request device, a service request reception device, and a cloud-computing server operating software components for the revenue and productivity optimization system. In one embodiment, one or more environmental variables, such as ambient temperature, humidity, noise levels, brightness, and ambient gas compositions, are measured by one or more environmental sensors, and relevant sensor data are transmitted to the cloud-computing server. The revenue and productivity optimization system correlates the sensor data to bell button press frequencies and intervals from the service request device, and analyzes and determines an optimal threshold or range for those environmental variables for higher revenue and/or productivity of an organization.