. Remote SMS Real-time monitoring and recording instruments (GSM) Product Description: GSM network after years of development and improvement, is now very mature, less blind spots, signal stability, automatic roaming, and the communication distance from the surrounding environment. With the popularity of mobile phones, more and more users want to be able to real-time monitoring specific environmental temperature and humidity using a mobile phone. S500 Series SMS alarm temperature and humidity logger, is China's self-developed a new generation of chart recorders, in the original S500 series of temperature and humidity recorder based on the increase SMS alarm function. Renyiyitai mobile phone users query temperature and humidity data logger, and, once the temperature and humidity measured value exceeds the set range, temperature and humidity logger sends an alarm message to the specified user. Features: beautiful appearance, simple operation, reliable performance, desktop and wall-mounted dual-use, easier to use. At the same time, through the CE certification. High measurement accuracy (0.2 ~ 0.5 ℃ / 2 ~ 5% RH). Large storage capacity. Oversized LCD screen, temperature and humidity data also showed that straightforward. Built-in audible alarm, exceeds the set limit alarm information is sent to a designated mobile phone users. The user phone dialing function to query the data. Without time and place restrictions, at any change of control of field data. The upper limit of temperature and humidity instrument programmable settings, temperature and humidity exceeds the set value, after the temperature and humidity exceeded, the instrument can not only automatically sound and light alarm, but also through SMS alarm, automatically send a signal to the user's mobile phone text messages, and user-friendly operation temperature environment, real-time monitoring. Users can call the instrument in the field, the instrument can be sent immediately the current temperature data to the user. User-friendly environment to master the temperature information detected anywhere. Application: widely used in industry, remote, workshops, warehouses, cold storage, cold chain, project monitoring, food, vaccines, transportation and other areas S500-TH S500-EX S500-ET S500-DT S500-TH S500-EX S500-ET S500 -DT Model Accuracy measurement range of the sensor type recording capacity S500-TH-GSM ± 0.5 ℃ / ± 5% RH -20 ~ 70 ℃ 0 ~ 100% RH Temperature + Humidity, built-in 65000 groups S500-EX-GSM ± 0.5 ℃ / ± 5% RH -40 ~ 85 ℃ 0 ~ 100% RH temperature + humidity, external cable length 3 m 65000 Group S520-TH-GSM ± 0.3 ℃ / ± 3% RH -20 ~ 70 ℃ 0 ~ 100 Temperature + Humidity% RH, built 65,000 groups S520-EX-GSM ± 0.3 ℃ / ± 3% RH -40 ~ 85 ℃ 0 ~ 100% RH temperature + humidity, external cable length 3 m 65000 Group S580-TH- GSM ± 0.2 ℃ / ± 2% RH -20 ~ 70 ℃ 0 ~ 100% RH Temperature + Humidity, built-in 65000 groups S580-EX-GSM ± 0.2 ℃ / ± 2% RH -40 ~ 85 ℃ 0 ~ 100% RH temperature + humidity, external cable length 3 m 65000 Group S500-ET-GSM ± 0.5 ℃ -40 ~ 85 ℃ single temperature probe, cable length 3 m 65000 Group S500-DT-GSM ± 0.5 ℃ -40 ~ Dual 85 ℃ temperature probe, cable length 3 m 65000 Group S520-ET-GSM ± 0.3 ℃ -40 ~ 85 ℃ single temperature probe, cable length 3 m 65000 Group S520-DT-GSM ± 0.3 ℃ - Dual 40 ~ 85 ℃ temperature probe, cable length 3 m 65000 group