We are Shenzhen Widesense Technology CO.,LTD of China.

I want to introduce our STEPs DDC ( direct digital control) products to you, they are designed for HVAC system,Building Auto-control System(BAS),and it can replace PLC in most condition.



STEPs DDC series include STEP1,STEP2,STEP3,STEP600. withe MODBUS or LONWORK protolcols.



STEPs DDC has CE certification, with high-reliability, can work in most complex environment.



Compared with the other similar products, STEPs DDC have the following characteristics:

- Can work with external program or keyboard of the panel to set configuration.

- Unrivaled cost performance than other similar products, can save 30% to 50% of the investment for end user.

- On -line debugging and programming ability, very easy secondary development from PC, friendly MMI surface.

- Opened protocols,and many energy saving database.

STEP3 Introduction

1.1 STEP3 is a Direct Digital Control for HVAC(Heating,Ventilating,and Air Conditioning) and BAS(Building Autocontrol System),Factory Power Monitor.

1.2 Industry local bus for network..

1.3 Two way configure, keyboard or COMPUTER download, secondary program software is free!

1.4 Two way download program,from COM or the local bus.

1.5 Online emulator, for test your control logic, it is free too!

1.6 General-utility I/O port technology, AI and DI,AO and DO can exchange, AI ports can be smart set to PT1000,NTC,0-10VDC,4-20mA by software.

1.7 High reliability, CE certification.

1.8 Good shape, easy installation.

1.9 Excellent cost effectiveness,30%~50% saving cost than others.

1.10 STEP3 DDC I/O ports : AI(temperature*4,0-10VDC*4),DI*6,AO*4,DO*8.

1.11 STEP3 ExtendI/O ports: AI(temperature*4,0-10VDC*4),DI*8,AO*4,DO*8.

1.12 Each STEP3 can connect with 3 Expand.

1.13 Opened Modbus protocols.




STEP3 DDC parameters:

I/O type
Parameters
Quantity

AI
0-10VDC
4

PT1000
4

DI
8mA
6

AO
0-10VDC
4

DO
AC24V/1A
8

Power supply
24VAC

Communication
Modbus,RS-232






I believe our DDC is a good product for you, and it is really very cheaper than Honeywell or Johnson DDC.



We are looking for the exclusive agent in your country.OEM/ODM are available.



If you have interesting, please reply.



Best regards,

Strong Wang

General Manager

Shenzhen Widesense CO.,LTD.

TEL:+86-755-27663815

FAX: +86-755-27663915

Mobil:+86-138 287 65759

Email:widesense@gmail.com

http://www.widesense.cn