build in amplifier explosion proof telephone

{"cid":"91210763","title":"Aluminium Alloy Enclosure Strong Noise Canceling 30W Built-in Amplifier Explosion Proof Telephone for Hazardous Areas","imgUrl":"https:\/\/img.chinax.com\/nimg\/7a\/89\/254c344a2ef4b390497f99fc9d18-200x200-1.jpg","attrs":{"Price":"499","Minimum Order Quantity":"2","Model NO.":"YT-IPSG","Hardware Technology":"Board","Type":"IP - SIP or Analog","Exclusive Tech":"Strong Noise Canceling - Optional","Enclosure Material":"Aluminium Alloy - Thickness 10mm","Handset Material":"PC+ABS","Keypad Material":"Silicone\/Stainless Steel","Built-in Amplifier":"30W","Buzzer Power":"3W - Over 90 dB in One Meter","Power Supply":"Poe\/Gateway\/External Power Supply","Protection Grade":"IP67","Rated Voltage":"DC 12V\/AC 220V","Operating Temperature":"-40\u2103 ~ +70\u2103","Installation Type":"Wall-Mounted\/Pole-Mounting","Accessories":"Mounting Plate"}}

{"cid":"91221733","title":"Intelligent Fire Safety Alarm System Addressable Manual Call Point For Explosion-Proof Environments","imgUrl":"https:\/\/img.chinax.com\/nimg\/10\/d6\/f9fd72f937fe26791de1b589aa3b-200x200-1.jpg","attrs":{"Price":"negotiable","Brand Name":"XHA","Model Number":"CA9006","Minimum Order Quantity":"1PCS","Delivery Time":"3 Working days","Certification":"CE","Place of Origin":"China","Payment Terms":"T\/T, Western Union","Supply Ability":"100000PCS\/Month","Packaging Details":"100pcs\/carton","Working Voltage":"DC17V-DC33V","Wire Type":"Non-Polarity 2-Wired","Alarm Currrent":"\u22642mA","Types of Smoke Detectors":"Addressable Manual Call Point Button","Installation":"Wall Mounted","Customized":"Acceptable","Connected":"loop bus"}}