Compact heat stroke meter with black ball MT-877 1 piece

Equipped with alarm functions that correspond to physical work intensity, preventive guidelines for daily life, and preventive guidelines for exercise Neck strap, arm band, and carabiner included as standard Size: Main unit: 65 (W) x 117 (H) x 25 (D) mm (excluding black ball protruding part and band loop), Black ball: φ40 mm Weight: Approx. 80g Standard: JIS B 7922:2023 Class 2 compliant temperature Display range: 0.0 to 50.0°C Resolution: 0.1°C Accuracy: ±0.6℃ (20.0 to 50.0℃) ±1℃ for other temperatures Humidity Display range: 10.0 to 95.0% RH Resolution: 0.1% RH Accuracy: ±5% (30.0-90.0%, 20-30°C) ±7.0% for other temperatures WBGT Display range: 0.0 to 50.0°C Resolution: 0.1°C Accuracy: ±2.0℃ Black Ball Display range: 0.0 to 80.0°C Resolution: 0.1°C Accuracy: ±0.6℃ (20.0 to 50.0℃) ±1℃ for other temperatures Sampling: Approximately 20 seconds/time Warning Alarm Buzzer: 75dB/off LED: ON/OFF Alarm time: 15 seconds (buzzer/LED/buzzer+LED/OFF) Operating environment Temperature: 0 to 50°C Humidity: 0 to 90% RH (no condensation) Wind speed: 0.3m/s or more Functions: Maximum/minimum value display, battery replacement display, indoor/outdoor mode Display character height: Approx. 17 mm (WBGT value display section) Power supply: 2 AAA alkaline batteries (included for testing) Accessories: 2 AAA alkaline batteries, arm band, carabiner, strap, instruction manual