Get real-time detection of air flow or loss thereof (HVAC, fans, heaters). This detector's quick-connect feature allows it to be easily connected to the SS6420 using a C6420 cable. This detector has disconnect sensing. Includes mounting clips and C6420-40 quick-connect cable (12m). Uses Stego Air Flow switch Type LC013 P/N 01300.0-00 (NC normally closed).