DIN933 is a German standard hexagon bolt, which is suitable for full thread hexagon bolts with a diameter of M1.6-M52. The general carbon steelgrades are mainly 4.8, 8.8 and 10.9. The common standards are DIN931 and DIN933 for metric coarse thread; DIN960
The ripple tank physical equipmentt is a special teaching experimental instrument for the teaching demonstration experiment of "mechanical wave" in middle school physics.
This analog wind up timer features a 60 minute Cook timer with a mechanical bell alarm. The unit is manufactured to the standard and does not require batteries.
The gift box contains tin tea canisters, and three small cans are combined into a set of gift box packaging. The surface is printed follow customer requirement, and surface embossed as customized. The three tea tins in each set are of different colors .
• Factory-made, quality-controlled and tested to stringent standards• Thermoplastic PVC material: Heating will beflexible and soft; Cooling rigid and stiff• Extruded and formed into a "U", "H" or flattened profile
Free language switching in 11 countriesAdded wired defense area accessWIFI+GSM/4G networking, support APP push, voice monitoring and other multi-channel alarm modeSupport APP remote control and parameter settingLocal button, APP remote, SMS learning remot
Embedded powerful 32-bit Cortex-M3 core based CPU master;Based on the multi-task operating system design, with excellent user experience;WiFi/GSM/4G/GPRS networking alarm, support APP push, SMS, voice monitoring, center networking, etc.;Supports SMS remot
1.7W solar panelOptional 4pcs 18650 batteries 2.Support integrated or split installation 3.Optional 3M extension cablebracket 4.It can be used wherever there is sunshine, and there is no power cut for 365 days
1.3.5W solar panel & built-in 15000 batteries2.It can be used wherever there is sunshine, and there is no power cut for 365 days3.Small package, suitable for export4.No need cabling/No need electricity/Remote monitoring/Full-color night vision/Two way aud