Pусский 
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Product Description
Marine RDYB-204B Intelligent Instrumentation
Product Introduction:
RDYB204B four-channel intelligent alarm instrument, combined with advanced digital circuit, converts the input 4-20mA analog signal into digital quantity and displays it on LCD screen. This product has high measurement accuracy, stable and reliable work, long service life and convenient installation and use. When giving an alarm, it can give an alarm with sound light output at the same time. The RDYB-204B alarm instrument can monitor four channels of 4-20mA analog input signals, gas concentration, toxic and harmful gases, smoke concentration and other thermal parameters.
Technical Specifications:
| Working voltage | DC18~DC28V |
| Input signal | 4~20mA |
| Measuring range | 0~100% LEL is linearly adjustable |
| Output of relay closed state | fault alarm, pre-alarm, high alarm and acoustic alarm |
| Maximum measuring point | 4 point |
| Acoustic alarm mode | high alarm, pre-alarm and fault alarm |
| Overall size | 80HX160WX140L(mm) |
| Cutout size | 76HX153W(mm) |
Characteristic：
*Strong anti-interference ability and internal self-checking function;
*It has the functions of alarming and recording alarm time and alarm type;
*The linearity can be adjusted, and the main and pre-alarm values can be set at the same time;
*LCD display;
