|Place of Origin:||Guangdong, China|
|Brand Name:||Smart Laffey|
Payment & Shipping Terms:
|Minimum Order Quantity:||50 Pieces|
|Packaging Details:||Carton Box|
|Delivery Time:||10-15 work days|
|Supply Ability:||10000 Piece/Pieces per Month|
|Function:||Control Room Light||Material:||Stainless & Aluminum Surface|
|Protocol:||RS485 Modbus||Category:||2 / 3 / 4 Gang|
|Power:||12V, DC||Conjoined:||2/3/4/5 Conjoined|
4 Gang Room Light Control Switch,
3 Gang Room Light Control Switch
Hotel 2 / 3 / 4 Gang Smart RS485 Modbus Switch Control Room Light
|Product Name||Smart Switch of Modbus|
|Back Box for Installation||UK Square Box|
|Application||Connecting room control unit|
1. Stainless steel or aluminum;
2. Plastic edging;
3. Anti-glare design;
4. Orange-red backlight;
5. Standard 86 wall box installation, multiple panels can connect seamlessly;
Modbus communication: Network smart panel, read or write the register through rs485, realizing distant monitor and output control. MODBUS RTU protocol is adopted. Serial port parameter settings: Baud rate:”9600”, check bit:”null”, data bit: “8”, stop bit: “1”.Two instructions distance: 100ms
(1) Communication format
|Function code||Data address||Communication data||CRC Check|
(2) Communication device No.
1----255, factory default address; OXFF is broadcast address
Under broadcast mode, write is permitted, not read. No data back from slave device.
(3) CRC16-1 check calculation methodology
CRC set 16-bit of register to 0xffff, ,and put the near two 8-bit data in to the register, every 8-bit data produce CRC,not including start bit, stop bit and parity check bit. When producing CRC, every 8-bit data operate xor with data in register with result of move 1-bit to the right and fill MSB with “0”,check “LSB”.If LSB is “1”,xor with default data. If LSB is “0”,no xor. Repeating above process until move 8 times, next 8-bit data operate xor with the current value. After end of data operation,the final value is CRC value.
(1) Mutual benefit : We are factory also have more than 10 years experience in manufacturing and developing of switches and sockets.
(2) Customize : We have strong R&D team, we will try our best to custom product as your request.
(3) OEM service : (a) Printing your Logo (b) Engraving words or icons
(4) Mix order : We accept mix order, different model and small quantity order.
1. Q:What’s the shipping method?
A: By express way. Such as Fedex, DHL, TNT and so on; by air or by sea. Shipping cost is decided by shipping ways and product’s actual weight and volume, also your detailed address.
2. Q:Can we print our own brand or logo on your products?
A: Yes, it is our pleasure to be one your OEM manufacturer in China to meet your OEM requirements.
3. Q: Why do some goods have difference between website picture and practical items?
A: Because difference of light and browser, also different batches, materials may be little difference, such as lining. Sometimes, the picture is for reference only. These are allowed in actual case. If any question, please tell us before order and ask clearly.
4. Q: Can I order one piece for sample or trial order less than MOQ to test the quality?
A: Yes, We recommend to check the sample before order. We accept trial order less than MOQ.
5. Q: If I order big quantity, what's the good price?
A: Please send the details enquiry to us, such as the Item Number, Quantity for each item, Quality request, Logo, Payment Terms, Transport method, Discharge place etc. We will make the accurate quotation to you as soon as possible.
If you have another question, please feel free to contact us.
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