Models 375 (Including Series One), 375/1, 375/2 & 375/4 Section 3
Ludlum Measurements, Inc. Page 3-3 May 2017
Audio: Intensity can vary from approximately 68 dB to 100 dB through
operation of the external rotary baffle and the internal voltage
connection. Frequency is approximately 3 kHz.
Power: 9 Vdc wall-mount adapter, handles any mains voltage in the
world, supplied with four sets of prongs for almost any style wall
receptacle
Battery Life: typically 48 hours in non-alarm condition; 12 hours in alarm
condition
Battery Charger: battery is continuously trickle charged when the
instrument is connected to line power and turned on
Warning!:
Only certified technician or calibration personnel should
replace battery.
Environmental Rating: NEMA (National Electrical Manufacturers
Association) rating of 1; IP (Ingress Protection) rating of 40. (Protective
enclosures are available for harsher environments.)
Construction: aluminum housing with ivory powder-coat finish
Size: 18.7 x 24.6 x 6.4 cm (7.4 x 9.7 x 2.5 in.) (H x W x D)
Weight: 2.1 kg (4.7 lb)
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