1. OUTDOOR COOLING RACK P905 Series HYBRID COOLING Patent : 10-2013-0015114 70% Energy Saving

2. CONTENTS 1.Outline for Hybrid Air cooling System (HCS) Rack 2. Features of P-905 Outdoor Rack and HCS 2-1) P-905 COOLING RACK 2-2) Features and specifications of HCS 3. Analysis on each cooling method 4. Cooling efficiency test date 5. Technology of GORE-TEX FILTER 2 TOTAL RACK CABINET SOLUTIONS

3. HCS is an energy-saving type and innovative COOLING SYSTEM for telecommunication equipment that employs advantages of DAC SYSTEM that uses existing air-conditioners and high technology. As average temperature is relatively low in all seasons except Summer in regions that have distinct four seasons, HCS optimizes energy efficiency by drawing in low temperature air through COOLING SYSTEM that mixes high temperature external air with cooled air for the summer season ONLY. For other three seasons, HCS does not operate COOLING SYSTEM but uses external air inhaled through SPECIAL FILTER. Compared to existing air-conditioners, cooling efficiency of innovative HCS is the same, but energy efficiency is improved by 70%. HCS is eco-friendly COOLING SYSTEM. 3 P905-HYBRID COOLING RACK Series Outline and Features of Hybrid Cooling System (HCS) Rack 70% of Energy cost reduction Patented in Korea & Japan

4. P905 – COOLING RACK As designed in accordance with aseismic code, its aseismicity and intensity of frame are superb. Also, its SMART system uses environment monitoring equipment to enable users to remotely monitor (AC/DC, Inner temperature, Door opened or closed, Flooding, Fire, etc.) and control (Power On/Off) the products, and to predict possible system breakdowns. Thus, users can take prior action before system breakdowns take place. 4 P905-HYBRID COOLING RACK Series Features Foam casket Applied on both front and back Door. Qualified for IP- 66 by great restitution power. IP-66 Outline and Features of Hybrid Cooling System (HCS) Rack Environment Monitoring Remotely monitor and control inner environment and enable users to predict System Breakdowns remotely.  Functions and Structural Characters. 1. Qualified design for international standards (IEA, EIA, DIN) that maintains compatibility with all equipment. 2. Qualified design for IP-66 that protects SYSTEM from water and dust perfectly. 3. Qualified design for aseismic code that provides great aseismicity and intensity of frame. (Pass Korea Testing Laboratory seismic test) 4. On MAIN FRAME, high strength steel is used. On top and bottom base, integral die casting and high strength steel are applied to provide structural stability (Allowable load 2000kg) 5. FOAM GASKET with great restitution power and aseismatic KEY are applied on both front and back door. 6. Outdoor powder coating is applied on Exterior of the product. W700

5. P905-HYBRID COOLING RACK Series 5 HeightUnitWidthDepth 220042 700 1400 1200 1100 1000 900 200037 180032 160028 140023 ■ SPECIFICATIONS Exterior of OUTDOOR RACK

6. Hybrid Cooling System(HCS) Features & Specifications Innovative and energy saving Cooling System that has the same cooling efficiency as that of existing cooling system while cutting 70% of Energy Cost, compared to existing products. 6 P905-HYBRID COOLING RACK Series ■ HCS Specification Outline and Features of Hybrid Cooling System (HCS) Rack ClassificationStandardNote Cooling Capacity1500W Working Voltage230V – 50/60Hz Power Consumption Cooling System On : 1450W FAN On : 250W Operating Temperature -45 ℃ to +65 ℃ Reference Temperature set-up method 3 STEP Mode Noise55dB ~ 60dB Size / WeightW465 x H1225 x D355 / 55kg ■ HCS Features  Cutting more than 70% of Energy Cost.  Special Filter coated with membrane that makes it unnecessary to clean and replace for 5 to 6 years from the first use.  EC FAN is applied to automatically control Fan speed according to inner temperature.  Prevent from system failure in case cooling system breaks down by ventilate inner air.  Fulfills the highest efficiency and cost reduction compared to other cooling systems. 70% Energy Saving

7. Cooling Method Inner Temperature (1000W) Noise Product Cost (1000W) Energy Consumption/year Energy Cost/year ProsCons Hybrid cooling System (HCS) Winter 25 ℃ 55dB$2,230 4,781kW/year 1. High energy efficiency 2. Inner temperature is maintained steadily. 3. System failure is prevented as inner air can be ventilated in case of cooling system breakdown. 4. As cooling system is operated only for the summer season, life cycle is long and failure rate is low. 5. Low noise. Expensive product cost. Summer Outdoor 42 ℃ 35 ℃ $456.28 △ T△ T △ T : -7 ℃ Existing Air- conditioning System Winter 35 ℃ 65dB  Import : $2,230  Domestic: $1338 14,892kW/year 1. Inner temperature is maintained steadily 1. High energy consumption and energy cost. 2. Cooling system breakdown results in system failure. 3. Expensive product cost 4. As operating 24/7, short life cycle. 5. High noise. Summer Outdoor 42 ℃ 35 ℃ $1421.16 △ T△ T-7 ℃ Heat Exchange Winter 40 ℃ 65dB$892 4,380kW/year 1. Cooling efficiency is poor 2. High noise. Summer Outdoor 42 ℃ 62 ℃ $418 △ T△ T+20 ℃ DAC SYSTEM (Direct air Cooling) Winter 25 ℃ 55dB$892 2,190kW/year 1. Low energy consumption. 2. Low product cost and noise. 1. For the summer season, maximum inner temperature reaches over 50 ℃. Summer Outdoor 42 ℃ Max 52 ℃ $209 △ T△ T+10 ℃ Analysis on Cooling Method 7 ■ Refer : Industrial energy cost rate 1KW/h : $0.10 ■ Cooling Capacity: 1000W ■ Life cycle : 6 years P905-HYBRID COOLING RACK Series

8. 8 Cooling efficiency test date Mode Cooling ONFAN ON FAN SPEED Cooling OFFFAN OFF 33 MODE 33 ℃ → ON20 ℃ → ON 30 ℃ → 100% 30~20 ℃ → 100~50% 20~15 ℃ → 50~30% 15 ℃ → OFF 36 MODE 36 ℃ → ON23 ℃ → ON 33 ℃ → 100% 33~23 ℃ → 100~50% 23~18 ℃ → 50~30% 18 ℃ → OFF Mode Cooling ONFAN ON FAN SPEED Cooling OFFFAN OFF 39 MODE 39 ℃ → ON26 ℃ → ON 36 ℃ → 100% 36~26 ℃ → 100~50% 26~21 ℃ → 50~30% 21 ℃ → OFF USER MODE Set-up → ON Set-up -13 ℃ A→ (ON) Set-up -3 ℃ → 100% Set-up -18 ℃ = OFFA-5 ℃ = OFF Cooling system by MODE & FAN Operating temperature

9. P905-HYBRID COOLING RACK Series 9 GORE-TEX FILTER is a specially manufactured filter containing high technology. Only air can pass through the GORE-TEX FILTER while water, moisture and dust cannot. By coating surface of FILTER with membrane, FILTER is protected from contaminants to be bonded inside. Thus, replacement and cleaning are unnecessary for 5 to 6 years from the first use. ■ Thanks to membrane coating, replacement and cleaning is unnecessary for 5 to six years from the first use. ■ When taking look at this filter, its surface looks just like rubber gloves. The principle of this filter is to use strong FAN to inhale air only. IP-6 GORE – TEX FILTER Technology Dust Moisture Water Air ■ The size of gap area within FILTER is 0.3 ㎛, so dust, water and moisture cannot pass through it. ■ Dust Sizes 1. Clean air : 10μm 2. Weak pollution : 10~20 μm 3. Serious pollution : Over 20 μm 3. Yellow-dust : 1~20 μm

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