Lutron SC-941 Sound Level Calibrator SPECIFICATIONS: * Frequency: 1000 Hz ± 2% * Sound Pressure Level: 94 dB ± 0.75 dB * Suitable Microphone Type: 0.5 inch or 1 inch microphone * Total Harmonic Distortion: ± 2% * Standard: According IEC942, Class 2 * Operating Temperature: 0 - 50°C (32 - 122°F) * Power Supply: DC 9V battery * Power Consumption: approx. DC 7mA * Dimension: Dia. 50 mm x 145 mm length * Weight: approx. 359 g (including batteries)

Multifunction Environment Meter EM-7965 SPECIFICATIONS: *Sound Level Range: 35dB - 130 dB *Sound Level Accuracy: ±2.0 dB *Sound Level Resolution: 0.1 dB *Lux Meter Range: 0 - 200,000 Lux ; 0 - 20,000 Fc *Lux Meter Accuracy: ±4% rdg ±0.5% f.s (<10,000 lux) *Anemometer Range: 0.5 m/s - 30.0 m/s *Anemometer Accuracy: ± (3%±0.3d) *Anemometer Unit: m/s , km/h, ft/min, knots, Mph *Temperature Range: -40 - 70°C (-40 - 158°F) *Temperature Accuracy: ±2.0°C , ±3.6°F *Temperature Resolution: 0.1 *Humidity Range: 10 - 95% RH *Humidity Accuracy: ±5RH% *Humidity Resolution: 0.1 *Data Update: 1 time/sec *Maximum Value: Max *Minimum Value: Min *Data Hold: Hold *Auto Power Off: after 15 minutes of inactivity *Power Supply: Battery 9V *Battery Life: about 30 hours *Dimensions: 252 (L) x 66 (W) x 33 (H) mm *Weight: 568g

Baro Thermo Hygrometer Analog Baro : 970 - 1050 Thermo : - 20 - 50⁰C Hygro : 0-100 % Diameter : 18 cm Made in Cina

Sound Level Meter Rion NL-27 Features : * Compliant with Japan Measurement Law, JIS, IEC requirements * Wide 107 dB linearity range allows sound level measurements from 30 to 130 dB without range switching * Easy measurement of sound level (Lp), equivalent continous sond level (Leq), Maximum Sound Level (Lmax), Sound Exposure Level (Le), and Peak Sound Level (Lcpeak) Specifications : * Standard compliance : General Purpose Sound Level Meter according to Japan Measurment Law JIS C 1509-1 : 2005 Class 2, IEC 61672-1: 2002 Class 2 ; CE Mark (EMC Directive 2004/108/EC), WEEE Directive * Measurement Functions : Sound Level Lp, Equivalent Continous Sound Level Leq, Sound Exposure Level Le, Maximum Sound Level Lmax, Peak Sound Level Lcpeak (only when peak range was selected) * Measurement Time Setting : 1 min, 5 min, 10 min, 1 h * Microphone : 1/2 inch electret condenser microphone ; Model: UC-52 ; Sensitivity Level: -33 dB ± 3 dB * Measurement Level Range (Normal mode) : A-weighting : 30 dB to 130 dB ; C-weighting: 36 dB to 130 dB * Linear Operation Range (A-Weighting, 1 kHz: 30 dB to 137 dB * Peak Sound Level Measurement Range: 65 dB to 140 dB * Residual Noise Level: A-weighting: max. 24 dB, C-weighting: max. 30 dB * Measurement Frequency Range: 20 Hz to 8 kHz * Power Requirement: Size AAA (IEC R03) battery x 2 * Current Consumption: approx. 80 mA * Temperature Operation: -10°C to 50°C * Humidity Range: 10% to 90% RH (no condensation) * Dimension: 120mm (H) x 63 (W) x 23,5 mm (D) * Weight: 105 g (including batteries)

Sound Level Meter Lutron SL-4010 SPECIFICATIONS: Measuring Range: 35 to 130 dB, 3 ranges :range 1 - 35 to 80 dB, range 2 - 50 to 100 dB, range 3 - 80 to 130 dB,Each range with warning indicator for over & under load. Resolution: 0.1 dB Measurement Frequency: 31.5 Hz to 8,000 Hz Microphone Type: Electric condenser microphone Size of Microphone: 1/2 inch standar Size Data Hold: Hold function to freeze the display value Operating Temperature: 0 to 50°C (32 to 122°F) Operating Humidity: Less than 80% RH Power: DC 9V battery Dimension: 225 x 70 x 28 mm Weight: 250g

Digital Sound Level Meter SL-108 Specification : * Measuring Level: 40-130 dBA * Accuracy: ±1.5dB * Frequency Range: 31.5 Hz to 8.5 KHz * Linearity Range: 50 dB * Frequency Weighting: A * Digital Display: 5 digits * Time Weighting: Fast / Slow * Microphone: 1/2 inch Electret Condenser Microphone * Max: Maximum Hold, Minimum Hold * Power Supply: 9V Battery * Self Calibration Time: 10 sec (every turn on) * Operating Temperature: 0°C - 40 °C * Operating Humidity: 10% to 80% RH * Storage Temperature: -10°C to 60°C * Storage Humidity: 10% to 70% RH * Dimensions: 150 (L) x 53 (W) x 31 (H) mm * Weight: 158g (including batteries)

Fluke 62 MAX Infrared Thermometer Temperature Range : -30 °C to 500 °C (-22 °F to 932 °F) Accuracy : ±1.5 °C or ±1.5% of reading, whichever is greater -10 °C to 0 °C: ±2.0 -30 °C to -10 °C: ±3.0 Response Time (95%) : <500 ms (95% of reading) Spectral Response : 8 to 14 microns Emissivity : 0.10 to 1.00 Optical Resolution : 10:1 (calculated at 90% energy) Display Resolution : 0.1 °C (0.2 °F) Repeatability of Readings : ±0.8% of reading or <±1.0 °C (2 °F), whichever is greater Power : AA battery Battery Life : 10 hours with laser and backlight on Weight : 255 g (8.99 oz) Size : 175 x 85 x 75 mm