SunSniffer adds rapid shutdown function to solar module-level monitoring system

Rapid shutdown function integrated into module-level monitoring system. Image: SunSniffer

SunSniffer is to launch its first junction boxes with the special monitoring sensor and a rapid shutdown function for solar modules.


In 2017, a revised version of the US National Electrical Code (“NEC 2017”) comes into effect, which then requires module-level rapid shutdown. SunSpec Alliance reacted on that and drafted specifications for the communication signal supporting module-level rapid shutdown (Communication Signal for Rapid Shutdown, SunSpec Interoperability Specification).


SunSniffer developed a sensor that not only provides a unique module-level monitoring system, including module-level temperature measurement, analysis via artificial intelligence and a simulation engine, but additionally is able to rapidly shut the system down according to the requirements of NEC 2017. LEONI and QC Solar together with SunSniffer developed the respective junction boxes with the embedded sensor.


PV module junction box sensor for US rapid shutdown.


The SunSniffer sensor measures voltage and temperature at each single module, and the simulation engine in combination with artificial intelligence allowsthe system to detect even the smallest error – with accuracy of under 1%, according to the company. The SunSniffer system not only detects errors, it analyses and identifies them, provides detailed instructions to operators in what, where and how to be repaired or swapped, and ensures complete documentation.


Market release will be December, 2016.

Read Next

September 22, 2022
Qcells has heightened its commitment to the global solar supply chain as its parent company, Hanwha Solutions, increases investment in clean raw materials.
September 22, 2022
Wood Mackenzie has repeated warnings that module supply shortages are set to persist until the end of 2023.
September 9, 2022
Maxeon Solar Technologies CEO Jeff Waters is stepping down from the role after four years, with the company on the search for a new head.
September 8, 2022
A review of Tongwei Solar's shingled solar modules ahead of an upcoming webinar the company is hosting with PV Tech.
August 29, 2022
A breakdown of LONGi's financial and performance results for the first half of the year as the company eyes new technology breakthroughs
August 4, 2022
Hanwha Solutions is reportedly considering expanding its investment into US solar production if the newly agreed upon Inflation Reduction Act (IRA) is passed.

Subscribe to Newsletter

Upcoming Events

Upcoming Webinars
September 27, 2022
15:30 AEST (UTC +10)
Solar Media Events
October 4, 2022
New York, USA
On-Demand Webinars, Solar Media Events
October 11, 2022
Virtual event
Upcoming Webinars
October 18, 2022
10am (EDT) / 4pm (CEST)