RK-4000 flammable / toxic gas alarm controller designed by high-end CPU and high-precision A / D converter. Be detected gas concentration exceeds the alarm setting, the instrument audible and visual warning, alarm, start at the same time outside the control of fire-fighting equipment or other safety equipment, in order to prevent or reduce the continuation of the degree of danger at the scene, to achieve the purpose of automatically exclude insurance intelligence . Main features: ◆ measurement accuracy, stable performance, low-power, anti-interference ability ◆ receiving DC4 - 20mA standard signal, micro-processing system ◆ manually turn on the fan and solenoid valve, high and low the paragraph alarm function ◆ LED digital display detection gas concentration of technical indicators: ◆ signal input: DC4-20mA ◆ power supply: AC220V 50HZ ◆ Detection range :0-100% LEL ◆ Transmission distance: 1200M ◆ Power: less than 10W ◆ Temperature: -30 ℃ ~ 70 ℃ ◆ Humidity: ≤ 95% RH your safety, the best in the the Shandong Andrew LO Electronic Technology Development Co., Ltd. www.qitibaojing.net.cn combustible gas alarm RK-4000 flammable / toxic gas alarm controller from the high-end CPU and high-precision A / D converter design made. Be detected gas concentration exceeds the alarm setting, the instrument audible and visual warning, alarm, start at the same time outside the control of fire-fighting equipment or other safety equipment, in order to prevent or reduce the continuation of the degree of danger at the scene, to achieve the purpose of automatically exclude insurance intelligence . Main features: ◆ measurement accuracy, stable performance, low-power, anti-interference ability ◆ receiving DC4 - 20mA standard signal, micro-processing system ◆ manually turn on the fan and solenoid valve, high and low the paragraph alarm function ◆ LED digital display detection gas concentration of technical indicators: ◆ signal input: DC4-20mA ◆ power supply: AC220V 50HZ ◆ Detection range :0-100% LEL ◆ Transmission distance: 1200M ◆ Power: less than 10W ◆ Temperature: -30 ℃ ~ 70 ℃ ◆ Humidity: ≤ 95% RH your security, all in Shandong the Xiang An Electronic Technology Development Co., Ltd. www.qitibaojing.net.cn