This listing is for the alarm component only, perfect for replacing a damaged alarm on an alarmed Hiblow pump. Alarm will sound and/or flash if air is not flowing (both options are available with the flip of a switch).
We do not recommend buying this to retrofit a Hiblow air pump that did not originally have an alarm. Retrofit installation requires onto any pump without an existing alarm requires expertise, drilling and tap and a chrome barb to be fitted which is not included in the purchase of the alarm. Therefore we recommend this unit only as a replacement for a previously alarmed pump.