Bestech Technologies Co., Ltd

BT-21A Gas Alarm System: -Co-work with electric-contact pressure gauge -Power Supply Voltage：12V AC -Input route: 7routes switch value differential pressure switch -Default pressure scope：-0.1M...

Sensors & Transmitters Bestech Technologies Co., Ltd 30 Dec 2025 ( )

Get Your Quote Now : US$ 20/ Unit

BT-21A Gas Alarm System:
-Co-work with electric-contact pressure gauge
-Power Supply Voltage：12V AC
-Input route: 7routes switch value differential pressure switch
-Default pressure scope：-0.1MPa～1.0MPa
-Pressure Monitoring Points：1～7gases
-Support RS-485 remote communication..
-Support sound and light alarming.
-Support buzzing sound muting.
-All parameters could be adjusted on site.
BT-21C Digital Display Gas Alarm System:
-Co-work with pressor sensors
-Power Supply Voltage：DC9V±5%
-Power Adapter Voltage：AC100V～240VAC
-System Power Consumption：2W(1gas)、3W(2gases)、4W(3gases)、5W(4gases)、6W(5gaes)、7W(6gaes)、8W(7gaes)
-Default pressure scope：-0.1MPa～1.0MPa
-Pressure Monitoring Points：1～7gases
-LED size：0.8inch
-Default Pressure Unit：Mpa
-Sensor suit for both positive and negative pressure.
-Support RS-485 remote communication.
-Support each gas pressure condition export (to replace Electro pressure gauge)
-Support export of DC1-5V analog quantity for each pipe gas pressure
-Support switching value export
-Support remote muting control within 5m scope.
-Support sensor failure inspection.Support sound and light alarming.
-Support buzzing sound muting.
-All parameters could be adjusted on site.
BT-21E LCD Display Gas Alarm System:
-Co-work with pressor sensors
-Power supply voltage：DC9V±5%
-Adaptor voltage：AC100V～240VAC
-System power consumption：＜10W
-Monitoring Line：1～8lines（ The 8th line do not support hub connection, can only be connected to main panel ）
-LCD Size: 10.1inch（222.7mm*125.3mm）
-Support user setting gas pressure unit
-Support user setting measure scope.
-Support each line pressure condition switching value output (to replace electro pressure gauge)
-Support system switching value output.
-Support sensor failure inspection.
-Support sound and light alarming.
-Support buzzer muting.
-All parameters could be set on site.
-Support Modbus_RTU agreement.

Technical Specifications

Item	Specifications	Remarks
Update Date	Bestech Technologies Co., Ltd	2025
Lead time	within 30 days	Can be expedited
Material	See product manual	Request Inspection Report
Application	Applicable to multiple industries	Complies with standards
Keywords	bed head unit,medical gas outlet,gas manifold,nurse call system