Sip and puff controls let powered wheelchair users drive and operate seating functions using breath pressure alone – ideal for users with limited or no upper-limb function. Allient New Zealand’s LiNX400 and LiNX500 Series input devices support sip and puff operation, with calibration for hard and soft sip/puff commands. Download the full installation manual below, or visit our LiNX Knowledge Base for step-by-step calibration guides.