4 and 6 digit temperature and humidity options The 4 and 6 digit clocks all support across all their digit colours (RED, BLUE, AMBER, GREEN) an additional time and humidity function, these alternate with the display of current time, temperature and humidity and can be set to specific numbers of seconds for each function. Temperature deviation: ±0.5℃ Time accuracy: +/-approximately 200 Milliseconds Operating temperature: -10℃ to 60℃ Operating humidity: 90%maximum, non-condensing Temp can be displayed in℃/℉ The duration between time & temp change can be set separately Please call or email for latest price