ADF LENS FEATURES EN 12941 / TH3 PR SL approval Automatically variable air flow control – 170-200-230 l/min Auto shutdown in standby mode if unused for 30 minutes LCD – Air flow level and data Battery life Filter loading status Warning light and audio alarms with vibration for: Filter Block, Low Battery and Overheating Noise: Max 73dB Dimensions: 240 x 165 x 70 mm (L x W x T) Weight: 1370g (including filter, belt and battery) 1020g (excluding battery) Battery operating time: Level 1: >8 hours Level 2: >6 hours Level 3: >4 hours
