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CoolTel Temperature Loggers Review

UPDATE Jan 2017: OnSolution no longer sell the CoolTel range of GSM loggers. Instead, consider the WirelessTag range of loggers or contact us and we’ll help you find an alternative. OnSolution now distribute the CoolTel Temperature Loggers. What is a CoolTel Temperature Logger? The CoolTel Temperature Logger has all the benefits of a traditional temperature […]