The Testo 0554 0452 is a Sound Calibrator, for regular calibration of Testo 815 (order code 57-5131), Testo 816 (order code 57-5132) and other sound level meters.\n\n--Calibration Type: Sound Level\n--Accuracy: \u00B1 0.5dB\n--Operating Temperature Range: 0\u00B0C to +40\u00B0C\n--Battery Lifetime: 40h\n--Output Frequency: 1kHz\n--Manufacturer's part: Testo 0554 0452 Calibrator\n\n--\nOur eBay Store\n\nPlease note: This item has a longer lead time for dispatch then normal as it's a non-stocked item that is ordered in, please see the estimated delivery date by eBay. We will of course ship the item sooner if possible.\n\nTesto 0554 0452 Sound Meter Calibrator\n\nProduct Details\n\nThe Testo 0554 0452 is a Sound Calibrator, for regular calibration of Testo 815 (order code 57-5131), Testo 816 (order code 57-5132) and other sound level meters. \n\n--Calibration Type: Sound Level\n--Accuracy: \u00B1 0.5dB\n--Operating Temperature Range: 0\u00B0C to +40\u00B0C\n--Battery Lifetime: 40h\n--;