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Duceri Emergency Light Test Switch - White

£2299
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Duceri EMTS is a key-operated emergency lighting test switch that allows mandatory periodic testing of emergency lighting systems without needing to isolate mains power. The switch provides four selectable test durations — 10, 30, 60 and 180 minutes — selected by turning a central key switch, with LED indicators showing the active test period and power status.

Designed for commercial buildings, schools, hotels and other premises where emergency lighting requires regular functional testing under UK building regulations, the switch fits a standard UK back box and connects to the central battery or distributed emergency lighting control system. Turning the key initiates the test cycle, simulating a mains power failure for the selected duration while allowing the building to remain occupied and operational. The five LED indicators confirm which test period is active and whether the system is powered.

The white thermoplastic faceplate measures 93mm wide by 90mm high and sits flush with the wall once fitted. The key switch uses a replaceable barrel lock mechanism, with the key removable in the off position to prevent unauthorised testing. The 0.19kg unit projects approximately 58mm from the wall including back box depth, making it suitable for surface mounting in plant rooms, electrical cupboards and main distribution areas where emergency lighting circuits are accessible.

Specification
Product Net Weight (KG) 0.19
Product Gross Weight (KG) 0.2
Outer Gross Weight (KG) 9
Product Length (mm) 93
Product Width (mm) 58
Product Height (mm) 90
Outer Length (mm) 290
Outer Width (mm) 290
Outer Height (mm) 340
Downloads

Product Specification Sheet

Product Manual

Frequently Asked

What test durations are available?

The Duceri EMTS provides four selectable test periods: 10, 30, 60 and 180 minutes. These are selected by rotating the key switch to the corresponding position marked on the faceplate.

Does it require mains power isolation to test emergency lights?

No. The switch simulates a mains failure electronically, allowing emergency lighting to be tested while the building remains powered and operational. This is the primary advantage over physically isolating the mains circuit.

What back box depth is needed?

The switch fits a standard UK 25mm minimum back box. The total projection from the wall including the switch body is approximately 58mm once installed.

Can the key be removed during a test?

The key can only be removed when the switch is in the off position. During an active test cycle the key must remain inserted and turned to the selected test duration position.

Shipping & Returns

Free worldwide delivery

Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

Returns

30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.

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    Description

    The Duceri EMTS is a key-operated emergency lighting test switch that allows mandatory periodic testing of emergency lighting systems without needing to isolate mains power. The switch provides four selectable test durations — 10, 30, 60 and 180 minutes — selected by turning a central key switch, with LED indicators showing the active test period and power status.

    Designed for commercial buildings, schools, hotels and other premises where emergency lighting requires regular functional testing under UK building regulations, the switch fits a standard UK back box and connects to the central battery or distributed emergency lighting control system. Turning the key initiates the test cycle, simulating a mains power failure for the selected duration while allowing the building to remain occupied and operational. The five LED indicators confirm which test period is active and whether the system is powered.

    The white thermoplastic faceplate measures 93mm wide by 90mm high and sits flush with the wall once fitted. The key switch uses a replaceable barrel lock mechanism, with the key removable in the off position to prevent unauthorised testing. The 0.19kg unit projects approximately 58mm from the wall including back box depth, making it suitable for surface mounting in plant rooms, electrical cupboards and main distribution areas where emergency lighting circuits are accessible.

    Specification
    Product Net Weight (KG) 0.19
    Product Gross Weight (KG) 0.2
    Outer Gross Weight (KG) 9
    Product Length (mm) 93
    Product Width (mm) 58
    Product Height (mm) 90
    Outer Length (mm) 290
    Outer Width (mm) 290
    Outer Height (mm) 340
    Downloads

    Product Specification Sheet

    Product Manual

    Frequently Asked

    What test durations are available?

    The Duceri EMTS provides four selectable test periods: 10, 30, 60 and 180 minutes. These are selected by rotating the key switch to the corresponding position marked on the faceplate.

    Does it require mains power isolation to test emergency lights?

    No. The switch simulates a mains failure electronically, allowing emergency lighting to be tested while the building remains powered and operational. This is the primary advantage over physically isolating the mains circuit.

    What back box depth is needed?

    The switch fits a standard UK 25mm minimum back box. The total projection from the wall including the switch body is approximately 58mm once installed.

    Can the key be removed during a test?

    The key can only be removed when the switch is in the off position. During an active test cycle the key must remain inserted and turned to the selected test duration position.

    Shipping & Returns

    Free worldwide delivery

    Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

    Returns

    30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.