Water heater uses communication technologies such as WiFi that operates within a specific frequency spectrum. This technology must meet the main requirements through a standard testing process to ensure its quality, security, and compliance with applicable regulations.
With the increasing use of water heater technology, the Indonesian government through Decree of the Minister (KEPMEN) No. 12 Tahun 2025 from the Ministry of Communication and Digital (KOMDIGI) has established wireless power transmission testing standards to ensure that these devices are safe, efficient, and do not interfere with each other.
WiFi technology, which is widely used in water heater devices must comply with this standard to be used legally in Indonesia.
Also Read
This article will completely talk about the water heater testing guidelines based on the most recent directions, counting the certification steps you require to know.
Table of Contents
New Regulations on Water Heater
KEPMEN KOMINFO No. 12 Tahun 2025 specifies wireless power transmission operational frequencies to ensure devices work without interfering with other devices.
This control covers radio recurrence prerequisites, greatest transmit control, and testing for wild outflows (spurious emissions).
The following are the standard specifications:
| Operating Frequency Band | Usage Classification | Transmit Power | Band Width | Spurious Emissions |
| 2400 – 2483.5 | Access type 1 | ≤ 27 dBm EIRP (500 mWatt) | ≤ 40 MHz | ETSI EN 300 328 (min version 1.8.1) |
Water Heater Test Method
Water heater testing is carried out to ensure the device meets technical standards. Ministerial Decree of the Ministry of Communication and Digital No. 12 of 2025. Here are some of the main points in the test:
- Electrical Safety: SNI IEC 60950-1;2015 or the more recent, SNI IEC 62368-1;2013 or the more recent, IEC 60950-1; IEC 62368-1; and/or other relevant IEC or SNI standards.
- EMC (Emission): ETSI EN 301 489 and/or ETSI EN 301 489-17; IEC CISPR 32; and/or SNI CISPR 32: 2015 or the more recent.
- EMC (Immunity): The Testing Method for immunity requirements is under the provisions in the THIRD Dictum of this Ministerial Decree.
- RF Output Power, Channel Bandwidth, Power Spectral Density, Spurious Emissions, and Out-of-band Emissions: ETSI EN 302 567 (lowest version is 2.1.1)
Water Heater Certification Process in Indonesia
For water heater devices to be used legally in Indonesia, certification from DJID is required. Here are the steps to get it:
Pre-testing the device
Before official testing, the device must be pre-tested first using measuring equipment such as a spectrum analyzer.
This helps ensure devices meet technical standards before being tested in authorized laboratories.
Testing at an official laboratory
After passing the pre-testing, the gadget will be sent to an assigned official research facility to experience testing according to the guidelines stipulated in the Ministerial Decree of the Ministry of Communication and Digital No. 12 tahun 2025.
Issuance of certificates
After the device passes testing, an official certificate will be issued by DJID. This certificate is a requirement to market the device legally in Indonesia.
Tips to ensure standards compliance
- Learn the latest regulations: Make sure you understand every detail of the Ministerial Decree of the Ministry of Communication and Digital No. 12 tahun 2025, including technical requirements and test methods.
- Perform pre-testing: Before official testing, perform pre-testing to ensure the device meets standards. If you don’t have a measuring instrument, use the DJID certification service which provides pre-testing services.
- Counsel a master: If this is your to begin with time looking for certification, consider utilizing the administrations of experienced DJID certification administrations.
