The K60-IV is a full-featured, compact, one- to four-sensor gas detector for oxygen, combustible gases, hydrogen sulfide, carbon monoxide or sulfur dioxide. Key features include an easy-to-operate design, a water-resistant case and high sensitivity sensors. >>>Key Features 1) Lightweight and compact design (less than 300 g), easy to operate 2) Excellent built-in vibration alarm for use in areas of high ambient noises 3) 90 dB audible vibration alarm 4) Strong, protective, concussion-proof design for normal working in harsh environments 5) Easy access to pump, sensors, filter and battery compartment without exposing electronic components to potential damage 6) Rechargeable lithium battery for over 10 hours continuous operation 7) Intuitive simple-to-operate four buttons 8) User interface with a built-in pump 9) 2+2 digits LCD screen real-time displays gas concentrations and corresponding gas types 10) Full-featured self-test: sensors, lithium battery, circuit integrity and acousto optic vibration alarm function 11) Accessories: operator's manual, calibration hose, charger and conversion plug 12) CERTIFICATIONS: CMC, Ex, MA (SAFETY CERTIFICATE OF APPROVAL FOR COAL MINING PRODUCTS IN CHINA) >>>Technical Specifications Dimension 133 L × 70 W × 36 H mm Weight Approx. 300 g Sampling Pump, diffusion Working Temperature - 10 °C ~ + 44 °C Relative Humidity 15%~90% RH (non-condensing) Power 3.7 V rechargeable lithium battery, continuously work for over 10 hours Sensor Life One year for a combustible gas sensor; two years for oxygen and toxic gases sensors Display LCD display Alarm Mode Acousto optic alarm Explosion-proof Grade Exib IIC T3 Warranty 1 year GAS TYPE DETECTION RANGE RESOLUTION RESPONSE TIME O2 0-30%Vol 0.1%Vol T90≤15s LEL gas 0-100%LEL 0.1%LEL T90≤5s CO 0-1999ppm 1ppm T90≤25s H2S 0-100ppm 0.1ppm T90≤30s >>> CE Certificate: >>> Package >>> Our Services 1. For all our products, we offer a 1-year warranty and life-long maintenance. 2. All inquiries will be replied in 24 hours. 3. We will provide technical support; our engineers will help to solve the problems you met. 4. We can provide OEM and ODM service. 5. Our factory is located in Nanjing city, welcome to visit our factory. 6. All products will be fully checked and well packed before shipment, and qualification certificate will be provided. >>> Calibration For the calibration of KELISAIKE products, please feel free to contact us for help. Why choose KELISAIKE? 1. Mutual benefits: We are a manufacturer, so we can offer products of the same quality at the best prices. 2. Professional engineers: We have seasoned engineers with over 10 years' experience in the gas detection field. With various hi-tech equipment, we make products with higher accuracy and stability. 3. Customization: Thanks to our strong R&D team, we can customize our products at your request. 4. Free OEM service: a) Silk-print your Logo (≥ 100 PCS). b) Design your colour box packing (≥ 200 PCS). 5. Mixed order: We accept mixed orders, with different models and small quantity orders. 6. After service: (a) 1 Year warranty. (b) If you found any of our products of inferior-quality, we will send you new ones to replace them for free in the next order after verification. >>> FAQ Q. How about the Delivery time? A: Samples will be prepared within 5 days after receiving 100% T/T payment in advance. QTY order will be shipped in 20 days. Q: What kind of payments does KELISAIKE support? A: T/T, L/C, Western Union and Cash are all accepted. Q: What's the MOQ? A: Normally, the MOQ is 10 PCS, but we also can provide samples for quality