Key facts
- Manuals
- 2
- Languages
- EN
- Last added
- 2022-12-17
Featured HK manuals

HK DF-1A Converting Amplifier Datasheet
The DF-1A Converting Amplifier converts and amplifies switching signals from float level switches, allowing direct connection to electric control circuits for automatic liquid level control. It features a compact enclosure with guide grooves for easy installation.
The unit operates from a 220 VAC power supply, isolates input signals, and delivers a high‑power relay output up to 380 VAC 16 A. It is rated for ambient temperatures from –25 °C to 65 °C and includes a set of normally‑open and normally‑closed contacts without holding function.
Covers: HK INTRODUCTION · RABE SPECIFICATION · OPERATING PRINCIPLE · PRINCIPLE DIAGRAM

Umarex MP5A2 GBBR Airsoft Gun Operator's Manual
This operator's manual provides step‑by‑step instructions for disassembling the Umarex MP5A2 GBBR airsoft gun. It covers removal of pins, stock, trigger group, bolt, barrel, hop‑up set, and magazine components.
The guide is organized by major sub‑assemblies, allowing users to safely take apart the gun for maintenance, cleaning, or part replacement. Each section includes the required tools and the correct sequence of actions.
Covers: Rear Pin Removal · Buttstock Removal · Trigger Group Disassembly · Bolt Disassembly · Barrel Disassembly · Magazine Disassembly
Latest HK manuals
HK DF-1A Converting Amplifier Datasheet
Datasheet 1 pages · 178 KB · ENThe DF-1A Converting Amplifier is a matched product for UQK‑80 series float level switches, providing 220 VAC power and 380 VAC relay output.
Umarex MP5A2 GBBR Airsoft Gun Operator's Manual
User Manual 11 pages · 4.7 MB · ENOperator's manual for the Umarex MP5A2 GBBR airsoft gun, detailing disassembly and component removal steps.
Which document do I need?
Datasheet
Ratings, dimensions and ordering codes, for selection and design work.
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in HK manuals
What power supply voltage does the DF-1A require?
It requires a 220 VAC power supply (ae4VDC).
What is the maximum output voltage and current of the built‑in relay?
The relay can output up to 380 VAC at 16 A.
How do I remove the rear pin?
Remove the rear pin; the pins can be stored in the buttstock.
How do I take out the magazine inner tank?
Depress the valve and tap out the magazine inner tank.
