A Trusted UK Supplier Of ESD Control Products Since 1986

Constant Monitors

Ensures constant monitoring of the Earth-to-ground connection. Made to continuously monitor whether the wrist strap, bench mat or Earth is disconnected whilst simultaneously checking the Earth-to-ground is working correctly. If any part of the ESD system fail, a red LED indicator will illuminate and a buzzer will sound. Bench top and under bench monitors available to purchase. Manufactured in the UK.

CM8300R resistive version is made to order. CM8300C capacitive version is available from stock.

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Product Code: con/mon


From £87.00

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Ensure constant monitoring of the Earth to ground connection with Constant Monitors.

The in-line wrist-strap, mat and Earth Constant Monitors are designed to continuously monitor whether the wrist-strap, bench mat or the Earth is disconnected whilst simultaneously checking the Earth to ground system is working correctly. Should any part of the ESD system fail, a red LED indicator will illuminate and a buzzer will sound. This part of the system should be checked using the appropriate test equipment before continuing with manufacture. All cords must be uncoiled for correct working order.

Please note, the CM8300R resistive version is custom manufactured and made to order.  The CM8300C capacitive version is available from stock.

Product Features:

Made in the UK logo UK Manufactured

ESD Standards & Regulations Compliance:

ESD safe label - Bondline IEC 61340-5-1 ESD safe label - Bondline  Qualification to council directives 89/336/EEC
CE Icon WEB-min-alt European Conformity UKCA Compliance Icon WEB-min UK Conformity Assessed
bondline RoHS compliant bondline REACH compliant

Constant Monitor – Capacitive

Works with a standard wrist-strap and cord and has a body mass adjustment for individual user set-up:

CM8300C – Capacitive Monitor (for use on the workbench).

CM8300CU – Capacitive Monitor (for use under the workbench).

Constant Monitor – Resistive

Works with a dual wrist-strap and cord and automatically enters standby mode when the wrist-strap cord is removed. Indicates ‘high’ or ‘low’ fail for the users wrist-strap. Range 750K-35M.

CM8300R – Resistive Monitor (for use on workbench).

CM8300RU – Resistive Monitor (for use under workbench).

Dual Wrist Straps and Cord

High-quality dual wrist-strap and cords to be used with CM8300R.

DCC6 – Dual coil cord 3m (10ft) 4mm Stud to Stud,1 x Right Angle Jack, Colour Dark Blue.

DHCA4 – Dual Fabric Wrist Strap-  4mm Studs With enquiry form.

Bondline Dual Wristband and Cord

See our full range of ESD Testing Equipment here – ESD Test Instruments | Bondline.

Additional information

Weight N/A
Select a product:

CM8300C – Capacitive Constant Monitor, CM8300CU – Capacitive Monitor (Under Bench), CM8300R – Resistive Constant Monitor, CM8300RU – Resistive Constant Monitor (Under Bench)

Technical Datasheet

Constant Monitor: Technical Datasheet

Instruction Manual

Constant Monitor: Instruction Manual

Contact Us

Our sales and technical team are available to support you with any questions you may have regarding our products, services and more. To contact our team, please fill in the form below or click here.
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Next Day UK Delivery

On selected products if ordered before 1pm

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Dedicated account manager to help your ordering process

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Competitive Prices

Great value on premium quality products