Our new products are also from ZJ BENY! Introducing the Rapid Shutdown Module with Emergency Switch! This is in compliance with NEC2017. The rapid shutdown was first introduced in the 2014 National Electrical Code (NEC) with the intent of providing a simple method for firefighters to de-energize solar system DC conductors easily to ensure a safe condition on the roof of a building during a fire. This is because on a standard string inverter solar system when the inverter is switched off, the DC wiring from the solar system remains live when the sun is shining. Avail this only at SkyBright Solar!