Water resistant outdoor light sensor based on the TSL2591. The sensor includes a TSL2591 mounted inside a glass tube with a rubber stopper. The glass tube is covered with black adhesive shrink tubing and the end exposes the TSL2591 sensor mounted on a PCB. Includes a 3ft cable and RJ-45 jack that is compatible with the Sentient Things IoT Node connector. The TSL2591 is an I2C sensor and libraries are available from Adafruit or Sparkfun.