Model: EX686B71

$700.00 USD
(Pricing valid in US only)


Intrinsically-safe USB programmable electronic vibration switch with terminal block and condulet elbow

The Model 686B7x series of the Smart Vibration Switch have a 2-pin terminal connector and an integrated 1/4" NPT stud mount. They can be ordered with an EX prefix that includes a conduit elbow. EX versions are Intrinsically Safe for use in hazardous areas.

  • Relay: (Type) SPST, Form A or B MOSFET
  • Power Required: 24 to 240 V DC/AC 50/60 Hz
  • Electrical Connector: Terminal Block

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Alarm Threshold (±10 %)0.25 to 5 in/sec pk4.5 to 90 mm/s rms[1] 
Frequency Range (±3 dB)420 to 60 kcpm7 to 1000 Hz 
Hysteresis (% < Alarm Threshold)3; 6; or 10 %3; 6; or 10 %[1] 
Residual Vibration Level (Reference)Dependent or Independent Dependent or Independent [1] 
Residual Vibration Level (% Alarm Threshold)1 to 40 %1 to 40 %[1] 
MAVT (Sets Alarm Threshold to 2X actual vibration)Enabled or Disabled Enabled or Disabled [1] 
Transverse Sensitivity<3 %<3 % 
Power On Delay (±1 sec)3 or 20 sec3 or 20 sec[1] 
Startup Delay (±1 sec or 1 min ) (Time)1 to 60 sec or 1 to 30 min 1 to 60 sec or 1 to 30 min [1] 
Startup Delay (x Alarm Threshold)x2; x4; x8; Blocked x2; x4; x8; Blocked [1] 
Startup Delay (Active)Enabled or Disabled Enabled or Disabled [1] 
Operational Delay (±1 sec)1 to 60 sec1 to 60 sec[1] 
Relay(Type)SPST, Form A or B MOSFETSPST, Form A or B MOSFET 
Relay(Capacity)24 to 240 V AC/DC, 500 mA24 to 240 V AC/DC, 500 mA 
Relay(Latching)Latching / Non-LatchingLatching / Non-Latching[1] 
Relay(Contacts)Normally Open / ClosedNormally Open / Closed[1] 
Temperature Range (Operating)-40 to 185 °F-40 to 85 °C 
Temperature Range (Storage)-40 to 257 °F-40 to 125 °C 
Overload Limit (Shock)5000 g pk49050 m/s² pk 
Power Required24 to 240 V DC/AC 50/60 Hz24 to 240 V DC/AC 50/60 Hz 
Current Rating (Relay Closed)500 mA500 mA 
Leak Current (Relay Open)≤1 mA≤1 mA 
Electrical Isolation (Case)>100000000 Ohm>100000000 Ohm 
Size - Hex1.38 in1.38 in 
Size - Height3.68 in94 mm 
Weight7.0 oz200 gm 
Mounting Thread1/4 NPTNo Metric Equivalent 
Sensing Element (Internal)Piezoelectric AccelerometerPiezoelectric Accelerometer 
Housing MaterialStainless SteelStainless Steel 
Electrical ConnectorTerminal BlockTerminal Block 
Electrical Connection PositionTopTop 
Screw Terminal Wire Size12-24 AWG3.0 - .2mm² 
Conduit Housing Thread1" NPT FemaleNo Metric Equivalent 

All specifications are at room temperature unless otherwise specified.


Product Notes
[1] USB Programmable - See configuration sheet supplied with switch for exact setting.
[2] See PCB Declaration of Conformance PS051 for details.
No Accessories
Optional Versions:
(EX) Hazardous Area Approval- contact factory for specific approvals
    Hazardous Area ApprovalCl I, Div 2, Groups A, B, C, D; ExnA IIC T3, AExnA IIC T3
Product Documents
Additional Downloads
- NEW Programming Software for Use with 070A100 Dongle (EE225)
 For use with 070A100 dongle to program 686-Series devices. For users that are still using the old 070A85 dongle and software, please contact the factory for a no charge upgrade.