JTY-GD-DG311火灾探测器(别名，开关量烟感探测器，以下简称探测器)适用于商场、宾馆、商店 、仓库、银行、通信机房、等民用及工业场所的火灾预报警。探测器具有灵敏度高、稳定可靠、耗电小、美观耐用、使用方便等特点。
探测器可以接入以下设备：
可编程逻辑控制器,（PLC），
温湿度传感器，
智能开关量信号采集显示仪，
模拟数字采集器，
各类消防输入模块，
信号采集模块，
安防报警主机，监控设备，
等可接收开关量无源触点信号的设备。
同时，可通过烟感探测器来联动声讯设备，风机等。
探测器广泛用于以下领域：
通信基站，环境监控，
安防监控，消防系统，
智能小区，楼宇对讲，
仪器仪表，工控自动化，
设备机房，变电站安全，
隧道安全，特殊区域，
空调电梯维护，以太网远程监控等。
一. 性能：
报警声音： ≥80dB（或无声）
供电电源： DC9V～DC28V
电 流： 静态电流 ≤200uA
报警电流 ≤45mA
工作温度： -10℃～+50℃
相对湿度： ≤95%RH(40℃±2℃)
输出形式： 声光报警/继电器无源触点（NO/NC可设置）输出。
二. 功能：
自检：按下检测按钮,探测器LED常亮，同时发出报警音响（注：自检仅对于探测器本身内部功能进行检测，自检时无继电器信号输出）。
工作：正常情况下,探测器大约每隔6秒指示灯会闪亮一下。探测器自动检测周围环境中的烟雾,并根据使用环境状况进行灵敏度自动补偿。当烟雾浓度接近报警值，探测器加快对烟雾浓度趋势进行智能运算,同时报警指示灯开始闪亮。若运算结果达到或超过报警值,探测器开始声光报警,并启动继电器输出。当周围环境的烟雾降低到报警值以下时,探测器自动恢复正常工作状态。
输出：无源触点输出；触点容量24V/1A，可通过探测器内部的跳线，设置为常开或常闭触点输出。出厂时跳线默认设置触点为常闭。
一. 性能参数
| 中英对照信息 | 开关量烟感 | Smoke Detector with relay output |
| 型号 | JTY-GD-DG311 | N.O:YT142 |
| 供电电源 | DC9V～DC28V | Operating Voltage Range: 9 to 28VDC Volts Non-polarized |
| 静态电流 | 静态电流 ≤200uA | Standby Current: ≤200μA@ 24 VDC |
| 报警电流 | ≤35mA | MaximumAlarm Current (LED on: ) ≤35mA@ 24 VDC |
| 报警浓度 | 1.06±.26%FT | Smoke Alarm Sensitivity: 1.06±.26%FT |
| 尺寸 | 103x55mm | size 103x55 mm |
报警声音： ≥85dB/3米
供电电源： DC 9V～DC28V
电 流 ： 静态电流 ≤200uA
报警电流 ≤50mA
工作温度： -10℃～+50℃
相对湿度： ≤95%RH(40℃±2℃)
输出形式： 继电器无源触点输出
触点容量2A@DC24V
二.安装：
在天花板上相距60mm的位置上打两个直径5mm的安装孔，用涨塞和螺钉固定探测器底座在天花板上。
注意：该产品不适宜在以下场所使用
正常情况下有烟滞留的场所；
有较大粉尘、水雾、蒸汽、油雾污染、腐蚀
气体的场所；
相对湿度大于95%；
通风速度大于5M/秒。
英文版：
1. GENERAL DESCRIPTION
The detectors are photo-electronic detector uses a state of-the-artoptical sensing chamber. This detector is designed to provide open area protection and to be used with most security alarm control panel.
Two LEDs on each detector provide local 360° visible alarm indication. They flash every six seconds indicating that power is applied and the detector is working properly. The LEDs latch on in alarm. LEDs will be off when a trouble condition exists indicating that the detector sensitivity is outside the listed limit. The alarm can be reset only by a momentary power interruption.
The detector that initiated the alarm condition will have its red LED and relays latched until reset by panel.
Heat detector and smoke & heat detector combine a photo electronic sensing chamber and a temperature heat detector.
2. SPECIFICATIONS
Operating Voltage Range: 9 to 28 VDC Volts Non-polarized
Standby Current: ≤200μA
Maximum Alarm Current (LED on): ≤45mA
Alarm Relay Contact Ratings: 2A@ 24V DC
Operating Humidity Range: ≤95%RH(40°C±2°C) Relative Humidity, Non-condensing
Smoke Alarm Sensitivity: 1.06±.26%FT
Temperature Alarm Sensitivity: 57°C (135°F) A1R (only for with heat sensor)
Height: 55 mm installed in Base
Diameter: 103 mm
WARNING
TO PREVENT DETECTOR CONTAMINATION AND SUBSEQUENT WARRANTY CANCELLATION, THE SMOKE
DETECTOR MUST REMAIN COVERED UNTIL THE AREA IS CLEAN AND DUST FREE.
3. INSTALLATION
NOTE: All wiring must conform to applicable local codes, ordinances, and regulations.
INSTALL THE DETECTOR BASE
1. Open area smoke or heat detectors are intended for mounting on a ceiling or a wall in accordance with the fire standard in your country.
2. Attach mounting base to ceiling or wall. The base of the detector can be mounted directly onto an electrical junction box such as an octagonal (75mm, 90mm or100mm), a round (75mm), or a square (100mm) box without using any type of mechanical adapter.
3. Position all wires flat against terminals, and fasten the wires on the terminals, See Figure 1.
4. Terminals function description:
Terminal 1: Relay Output -COM
Terminal 2: Relay Output – NO/NC (default NO)
Terminal 3: DC Power –
Terminal 4: DC Power +
