Model Number: KLJ-4020-2-7 Brand Name: KELIKING Key Specifications/Special Features: 1. Micro size (4*4*2mm) with clear and stable sound output2.LCP materialis appliedas housing material, ithas 300°C heat-resistance and acid/alkali-resistance specialtiesGoodbrass is chosen as lead pin in order to make it supplyhigh electrical conductivity3. SMD buzzer can perfectlymeet requirement of mature SMT, we have rich experience ina wide range ofproduction applications4. This producttotally meets RoHS Directive-compliant standard5. Providing rated voltage makesmoreexcellent work performance Oscillation frequency (Hz) 4000 Operating voltage (Vp-p) 2 to 4 Rated voltage (Vp-p) 3 Current consumption (mA/max) 110 Sound pressure level (dB/min) 73 Coil resistance(Ω) 12±2 Operating temperature (°C) -20 to 70 Storage temperature (°C) -30 to 80 Environmental protection rule RoHSDirective-compliant Dimensions (L) 4 * (W) 4 * (H) 2mm