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Installation examples – sketches

To connect the slider and the Doorkeeper, as well as as an extension for individual installations, must never a heavy connecting piece or extension, such as a chain or a heavy carabiner be used! The only thing that is normally permitted to pull on the Doorkeeper’s cord is the flap itself. If this rests on the floor, the weight on the Doorkeeper is removed and the motor stops as normal. If anything additional then still pulls on the flap, this leads to malfunctions during operation (e.g. rewound cord).
“Extension cord” always means a type of (non-flexible) builder’s string, fishing line or similar.



Installation instructions for VSB chicken flaps. The guide shows various ways to mount the VSB drive on sliding doors, cord guides with pulleys, optional counterweight, and connection of internal/external sensors for control.
Six technical installation variants of a VSB control system for movable dampers: rectangular or triangular, with integrated/external VSB module, UR sensors, optional external sensor. Minimum clearances and cables are shown.
Diagrams illustrating the installation and operation of VSB automatic animal flaps. Shown are vertical and horizontal sliding doors with minimum clearances and lever mechanisms. Also included is a bolt to protect against raccoons.
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Schematic drawing of a protective rail for poultry house sliders: two vertical grey guide rails. Protective rail against martens and foxes outlined in red at bottom. Mounting holes marked; slider area as dotted line. AXT-electronic logo centre.
Protective rail (accessory for poultry house slider)

Protective rail for our poultry house sliders in the three suitable sizes for: HS mHS gHS The protective rail prevents martens and foxes from getting under the sliding panel and pushing it open. This provides your animals with additional security. The rail can also serve as an installation aid. Installation: Position the rail, mark the slots, align the rails with the lower drill holes using the markings and screw them tight. You must then use a spirit level to ensure the rail is level and screw it tight.  The distance between the rails is then correct. The slider has sufficient play so that it moves freely within the rails. Material: Aluminium

Standard price: From €5.00
Silver-coloured, rectangular aluminium sliding panel for chicken door, mounted between two narrow vertical guide rails. Marked ‘HS’, size ‘22 x 33’ with arrows showing width/height. One mounting hole top and bottom. Size S.
HS – Aluminium chicken door size S, 22x33cm

Description: Slider for securing livestock pens, such as chicken coops (accessory for VSB+ST or VSBb electronic Doorkeepers) Installation note 1: The rails have an H-shaped profile. The lower drill holes are on the inside. The upper drill holes are on the outside. This prevents the slider from jamming. Installation note 2: Each slider runs approximately 1 cm within the rails. If the rails are to be fitted flush with the hole, the hole must be no more than 20 cm wide (22 – (2 × 1) = 20 cm). However, we recommend waiting until you have positioned the rails so that you can cut the hole to size accordingly.   Technical specifications: Slider height: 330 mm Slider width: 220 mm Slider weight: 300 g Rail height: 595 mm Rail width: 20 mm   Contents: 2 x rails 1 x Slider fitting kit

Standard price: €27.00
Rectangular aluminium slider for a duck flap, guided centrally between two vertical rails. White lettering: ‘mHS’ and dimensions ‘30 x 40’ with arrows indicating width/height. Rails at top and bottom with holes for fixing.
mHS – Aluminium duck flap, size M

Description: Medium-sized slider for securing livestock pens, such as duck houses (accessory for VSB+ST or VSBb electronic Doorkeepers) Installation note 1: The rails have an H-shaped profile. The lower drill holes are on the inside. The upper drill holes are on the outside. This prevents the slider from jamming. Installation note 2: The slider runs approximately 1 cm into each rail. Therefore, if the rails are to be fitted flush with the hole, the hole must be no more than 28 cm wide (30 – (2 × 1) = 28 cm). However, we recommend waiting until you have positioned the rails so that you can cut the hole to size accordingly.   Technical specifications: Slider height: 400 mm Slider width: 300 mm Slider weight: 500 g Rail height: 695 mm Rail width: 20 mm   Contents: 2 x rails 1 x Slider fitting kit

Standard price: €28.00
Silver-coloured, rectangular aluminium slider for a goose flap, surrounded by two vertical aluminium guide rails. On the slider: dimensions 33 x 50 cm with arrows (width/height) and 'gHS'. Rails with pre-drilled mounting holes at the top and bottom.
gHS – Aluminium goose flap, size L

Description: Large sliding gate for securing livestock pens, such as goose houses (accessory for the VSB+ST or VSBb electronic Doorkeeper).   Installation note 1: The rails have an H-shaped profile. The lower drill holes are on the inside. The upper drill holes are on the outside. This prevents the slider from jamming. Installation note 2: The slider runs approximately 1 cm into each rail. If the rails are to be fitted flush with the hole, the hole must be no more than 31 cm wide (33 – (2 × 1) = 31 cm). However, we recommend waiting until you have positioned the rails so that you can cut the hole to size accordingly.   Technical specifications: Slider height: 500 mm Slider width: 330 mm Slider weight: 800 g Rail height: 795 mm Rail width: 20 mm   Contents: 2x rails 1x Slider fitting kit

Standard price: €30.00
White, translucent pulley with a grooved edge and hub, alongside a silver-coloured hexagonal wood screw. Pulley for guiding/redirecting cords on sliders, screw for fastening, isolated on a white background.
UR – Deflection pulley, standard

Description: Our standard UR deflection pulleys are used when several sliders are to be operated using a single VSB, or when the VSB and sliders cannot be positioned optimally in relation to one another (requiring the use of an extension cord).   Installation: Variants and examples of how to install the VSB electronic Doorkeeper using deflection pulleys can be found under ‘Service and Documents’.   Technical specifications: Diameter: 40 mm Height: 8 mm   Contents:  1 x pulley with fixing or bearing screw

Standard price: €5.00
Shiny metal UR2 pulley with a white plastic wheel on a white background. Next to it is a bag containing three matching wood screws for assembly. Special component for cord routing in complex locking systems.
UR2 – Deflection pulley, special

Description: Our special UR2 deflection pulleys are used when more complex locking systems need to be implemented (guiding an extension cord).   Installation: Variants and examples of how to install the VSB electronic Doorkeeper using deflection pulleys can be found under ‘Service and Documents’.   Technical specifications: Height: 43 mm Width: 55 mm Length: 20 mm Dimensions of the integrated pulley: same as UR-VST   Contents: 1 x pulley, fitting materials

Standard price: €16.00
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