The SFA30(SFA-1) and SFA40(SFA-40A), the latter of which appears to be more resistant to interference from electric mosquito repellents.

SFA-40A Formaldehyde Sensor now available, 15% off

SFA-40A firmware development: added update policy control, formaldehyde threshold alarms and Bluetooth network configuration.now is 26.04.18-A

The SFA-40A is coming soon—a new venture based on the latest SFA40 formaldehyde sensor.