The Singapore Regulator, Info-communications Media Development Authority (IMDA), have issued the ‘Technical Specifications for Internet of Things’ on November 1, 2017.
This Specification defines the minimum technical requirements for Internet of Things (IoT) devices that use low power wide area technologies to operate in one of the authorized frequency bands and transmit within the corresponding output power levels stated.
Please refer to PDF attached to view full IoT specification sheet by IMDA.